We round up the controversial calls involving Jose Mourinho's Manchester United from Ref Watch over the past 12 months.
Former top-flight referee Dermot Gallagher has been running the rule over the key decisions in the Premier League on Sky Sports News HQ every Monday, but how many have gone for and against United?
Here, we take a look at the most contentious and most important calls of the 2016/17 season, and we'll have the other top six Premier League clubs for you each day this week. Tomorrow, it's Arsenal's turn...
Man Utd 1-2 Man City, September 10
INCIDENT: Claudio Bravo brings down Wayne Rooney in the area. Man City's goalkeeper miscontrols the ball, before making a desperate last-ditch tackle on the player, with the referee giving no penalty or taking any action against the Chile international.
DERMOT'S VERDICT: Incorrect decision - It's definitely not a sending-off. My immediate reaction was penalty and yellow card, because I think he has got enough of the ball. If you talk to a lot of people now they say: 'He has got so much of the ball that it is not a foul,' but my gut reaction was penalty and a yellow card.
In fairness, he has not gone airborne and he has arrived one footed, but what I would say is that it is definitely not a red card, as he has not seriously endangered the safety of an opponent, he has not gone two-footed and he has not gone out of control with his body.
Chelsea 4-0 Manchester United, October 23
INCIDENT: David Luiz is booked for a tackle on Marouane Fellaini. With Chelsea winning 2-0, Luiz is only shown yellow even though the challenge was with his studs, catching Fellaini on his knee.
DERMOT'S VERDICT: Incorrect decision - If the referee sees the angle we have seen, he would definitely show a red card because he has shown six studs, caught him high on the knee and the ball has gone. Martin Atkinson is the other side and has seen the high boot. He thought he caught him, but didn't see the seriousness. I thought it was a red card. If you go in that high with studs showing, you run that risk.
Man Utd 0-0 Burnley, October 29
INCIDENT: Ander Herrera was given a second yellow card for a foul on Matthew Lowton, but he appeared to slip before clattering into the Burnley player.
DERMOT'S VERDICT: Incorrect decision - I think the player is unlucky. He has slipped. It looks as though it is reckless, but he tries to pull out. Mark Clattenburg has seen the follow-through and sees the impact and he gives a second yellow card. It's unfortunate, but that's how he's seen it. He put himself at risk with the way he went into the tackle, but unfortunately for him, I don't think he followed through. It is very, very harsh.
Everton 1-1 Manchester United, December 4
INCIDENT: Manchester United defender Marcos Rojo lunges in two-footed on Everton midfielder Idrissa Gueye. Despite the nature of the challenge, Rojo is only shown a yellow card by referee Michael Oliver.
DERMOT'S VERDICT: Incorrect decision - There's no debate whatsoever for all kinds of reasons. The distance he's come, and it's a giveaway just to see how long he's airborne. The assistant has the view from behind, the referee has the view from coming in. It's ticked all the boxes. He's gone through the air, he has no control of his body, it's two-footed, he's out of control and he's going to endanger the safety of his opponent. It's a red card and we can't say anymore.
Man Utd 1-0 Tottenham, December 11
INCIDENT: During a Tottenham corner, Marcos Rojo grabs onto the shirt of Victor Wanyama that does not allow him to move towards the ball. After it is cleared, the Tottenham midfielder goes to referee Bobby Madley pulling his shirt and claiming he was fouled, but no penalty is given.
DERMOT'S VERDICT: Incorrect decision - If it's seen, it's a penalty, there's no doubt about it. It's ironic because he did it just before this incident and there was a lot going on in this game. Rojo has quite clearly grabbed Wanyama's shirt and he stops him going forward. I think that's what forwards don't like. It's not that they can't get to the ball, it's the fact that their movement is restricted and stops them from making any movement whatsoever.
Crystal Palace 1-2 Manchester United, December 14
INCIDENT: Manchester United defender Marcos Rojo went in for a two-foot challenge on Crystal Palace winger Wilfried Zaha. Referee Craig Pawson awarded Palace a free-kick and booked Rojo, but the nature of the challenge could have easily seen the Argentine pick up a red card.
DERMOT'S VERDICT: Incorrect decision - It is a red card, there's no doubt about it. Zaha has done him a massive favour because he has seen him coming but got out of the way of it. That's all the referee could have thought, that he hasn't made contact, but that doesn't excuse what he's done. You don't have to have two broken legs for it to be a red card. [The referee] has recognised it wrong, he's not read it as it should be. If he sees that again, which he will do, he'll be really disappointed.
Crystal Palace 1-2 Manchester United, December 14
INCIDENT: Manchester United score the opening goal against Crystal Palace at Selhurst Park in controversial circumstances as Zlatan Ibrahimovic and Paul Pogba combine, with the latter finding the back of the net. The replays suggested that Ibrahimovic handled Juan Mata's free-kick in his assist for Pogba, and the Frenchman was in an offside position as he converted. Regardless, the goal was not ruled out.
DERMOT'S VERDICT: Incorrect decision - It does look like handball, there's no doubt about that. I think Pogba is offside but in defence of the assistant, it's a very tough call for him because it isn't clear cut. What I would say is if the referee had given handball there I don't think anyone would be complaining. It happened so fast, it's very easy when we look at still pictures and say: "he's half a body offside". But he is just offside.
West Ham 0-2 Man Utd, January 2
INCIDENT: Sofiane Feghouli takes a heavy touch and collides with Man Utd defender Phil Jones. Referee Mike Dean issues a red card to the West Ham attacker
DERMOT'S VERDICT: Incorrect decision - I think it is a yellow card. What happens is Feghouli overruns the ball and lunges in. He doesn't go out of control as such, he goes in for the ball and collides with Jones as the United defender comes in from the other side. It was not as if Jones was there to take the impact, Jones came into his line and I think all those factors lead to a yellow card.
The unfortunate thing is Mike has seen the end of it and the reaction and I think a lot of that has played on his mind. In fairness to him, he took his time. You can't say it's a knee-jerk reaction but when he's computed it all he's come to the decision it's a red card. I think he will look at that now and think he got it wrong. What I will say is I think Mike has been very unfairly criticised as a person because in the nine and a half years I have been off the Premier League, I think Mike Dean has made fewer errors than any other referee. The reason why we are talking about this error so much is because Mike Dean doesn't make many.
Manchester United 1-1 Liverpool, January 15
INCIDENT: Antonio Valencia takes a quick throw and then receives a quick pass back but looks offside. However, the linesman doesn't see it as he's at an impossible angle. The play develops and Zlatan Ibrahimovic scores the equaliser.
DERMOT'S VERDICT: Offside - but I have sympathy for the linesman. Valencia takes a quick throw and the linesman has to step quickly out of the way to avoid getting struck with the ball. Then as the play develops quickly, he's not in a position to see the offside. It's unfortunate as, by the time he's back into position, the ball had been crossed.
Manchester United 0-0 Hull City, February 1
INCIDENT: Oumar Niasse escapes a red card despite appearing to foul Michael Carrick and Daley Blind while already booked. Mike Jones booked Niasse for a soft foul on Marcos Rojo early in the match but chose not to issue a second booking for the two later challenges despite appeals from the United players.
DERMOT'S VERDICT: Incorrect decision - There's no doubt in my mind that it is a yellow card. If you've put the player in last-chance saloon then he's got to go. The first one he was very, very unlucky to get a yellow but overall he was very, very lucky to stay on the pitch.
Man Utd 3-2 Southampton, EFL Cup final, February 26
INCIDENT: Manolo Gabbiadini sees his goal flagged for offside by Stuart Burt early on in Southampton's 3-2 defeat by Man Utd in the EFL Cup final. However, Ryan Bertrand was the player offside from the cross, and the defender was not interfering with play.
DERMOT'S VERDICT: Incorrect decision - He's got it wrong because he's acted too fast, he hasn't waited. As you can see Bertrand is offside but not Gabbiadini. I feel sorry for the referee [Andre Marriner] because he may well have said to the linesman: "Are you happy with that?" and the linesman may have said yes. Would I have gone across to the linesman? I think because the ball has gone dead [into the goal], that's the ideal time to use your time, but I think if the assistant believes he has got it right, he has no reason to call the referee over. It's just a real unfortunate error. It's a big error. This is what we'd call a key match decision, and it affects the outcome of the game.
Man Utd 3-2 Southampton, EFL Cup final, February 26
INCIDENT: Jack Stephens goes in studs-up on Anthony Martial after the ball had run loose, but only uses one foot to tackle, and is not off the ground. Referee Andre Marriner gave Stephens a yellow card, and the Southampton defender was in fact clipped by Jesse Lingard in the build-up to the incident.
DERMOT'S VERDICT: Correct decision - I think the referee has done really well here, because he was clipped by Lingard. He's low, and he misses with his studs and gets him with his knee. The referee doesn't get influenced by the Manchester United protests.
Manchester United 1-1 Bournemouth, March 4
INCIDENT: Bournemouth defender Tyrone Mings appears to purposely stamp on Zlatan Ibrahimovic's head as he's running back to defend his penalty area. The referee didn't see the incident but it did go before an FA panel, and Mings was banned for five matches.
DERMOT'S VERDICT: The only person that knows if he meant it or not was Tyrone Mings. He will say that he's trying to get out of the way. It will go before the process today. The FA will assign three former referees to have a look at it and it will need to be a unanimous decision for Mings to get a ban.
Manchester United 1-1 Bournemouth, March 4
INCIDENT: Zlatan Ibrahimovic - already on a booking - goes up to challenge for a header with Mings and catches the Cherries defender with an elbow. The referee takes no action, but Ibrahimovic is later given a three-match ban.
DERMOT'S VERDICT: This one is relatively easier to prove - the eyes don't have to look as he's already looked. There's three things you have to assess for an elbow. An aggressive act would be done with a clenched fist and draw it back with a lot of force, which he has done. It's also the pointed elbow that goes straight into the face. This ticks every box for a red card.
Manchester United 2-0 Chelsea, April 16
INCIDENT: Ander Herrera appears to handle Nemanja Matic's pass. The United midfielder blocks the Serb's through ball with his hand, but referee Bobby Madley deems it accidental, with the home side then going on to open the scoring.
DERMOT'S VERDICT: Incorrect decision - I thought it was (handball), but what I would say in defence of the referee, if you watch he has a great view, he makes a decision and clearly says: 'No'. So although I think he has got it wrong, I will applaud the referee for not hiding behind the fact like there was a player in my way, I was at the wrong angle. All I can presume is that he has judged a) the ball has come too close to him and his arm was already there and b) it has hit him too fast.
The amazing thing about it is as a consequence the ball quickly goes to Marcus Rashford and he scores, so it is a massive, massive incident and that is how fine a line referees tread. If that ball had just gone out for a throw-in, we would not be talking about it.
Manchester United 1-1 Swansea City, April 30
INCIDENT: Marcus Rashford is caught by the onrushing Lukasz Fabianski's arm. The England international's run into the area is ended after contact with the Swans 'keeper, with referee Neil Swarbrick awarding a spot-kick after some deliberation.
DERMOT'S VERDICT: Incorrect decision - I definitely do not think this was a penalty and I cannot understand why the referee gave it. The reason I say that is if a referee does not see something, I can live with that, it is human nature. What I cannot live with is a referee seeing something that did not happen. And if you see the referee's view, he has gone to the wrong position for whatever reason, he is blocked off by a number of players and he cannot see this decision.
He takes his time to look at his assistant, which is a little bit unfair as I do not think he can see it, and I think in the end he has just gambled and he has gambled wrongly.