Tuesday 4 October 2016 08:05, UK
Ander Herrera says Manchester United team-mate Zlatan Ibrahimovic sets the standard for the squad on a daily basis.
Ibrahimovic has had a major impact at Old Trafford since his arrival in the summer on a free transfer from Paris Saint-Germain, scoring four goals in the Premier League.
And Herrera - called up by Spain for the first time on Monday night - says the former Sweden international is an example to every member of the squad on and off the pitch.
"He's unbelievable. He doesn't lose one training session," Herrera told the club's official website. "He trains every day at his best trying to get everyone at their highest level.
"He is very, very aggressive and demanding but in a good way because every day he wants to win every training session and he wants everyone with him to win to keep working so we are very lucky to have Zlatan with us.
"If you see a game and you didn't know Zlatan's age you could think he was only 28 or 29 and that is good for us."
Herrera, who could win his first Spain cap in the upcoming World Cup qualifiers, says he is hugely impressed with the way Ibrahimovic looks after himself.
"You see the way he behaves," he added. "The way he trains even before the session, he is always stretching, taking care of his body, so that is the way a professional player has to behave.
"When I was not in a top team I used to admire these kinds of players and I wanted to be one of them one day, being at Man Utd eight or nine seasons, but it is not easy.
"He's an example for every one of us not just the young players. I am not young, not old, I'm in the middle at 26 and he is an example for me as well. When you behave as a professional you can be at a top club at 35."
