Graeme Souness says David Luiz should have seen red sooner against Arsenal because of a high boot on Laurent Koscielny.
The Chelsea defender was given a yellow card in the 52nd minute of Sunday's 0-0 draw at Stamford Bridge as he attempted an overhead kick in a packed box, catching Arsenal captain Koscielny in the face and sending him to the floor.
Following similar tackles from Sadio Mane and Matt Ritchie last weekend - the Liverpool man was sent off while the Newcastle winger only received a yellow - Souness believes Luiz should have been given his marching orders.
"I'm struggling to understand why this is seen differently to Sadio Mane's one," Souness told Sky Sports.
"He's gone for the ball, he's endangering an opposition player and I think that's a red. The fact he's in the six-yard box, he'll be aware that he's around bodies.
"I think if you're raising your foot high whether it's an overhead kick or not, you're risking a red card. I think it's a red card."
Luiz was eventually sent off in the 87th minute after a reckless challenge on Sead Kolasinac that saw his original yellow over-ridden by a straight red card, and Thierry Henry said there was "no doubt" the Brazil international should have been dismissed.
"He wanted to be clever, but he got caught. He could play back to the goalkeeper but he's inviting pressure because he loves to play," the Sky Sports pundit said.
"He's upset with Alexis Sanchez, he barges him out of the way and forgets to play football. Because he's upset with Sanchez, he takes his frustration out on Kolasinac. It's a red, no doubt."
There was a final thought for Souness on the red card, who said: "It's reckless. The game is 0-0, he's frustrated, he hasn't had a good day but that is a leg breaker. It's a red card plus."
Hit play on the video above to see the two challenges and listen to Souness and Henry discuss