Chelsea boss Thomas Tuchel believes Manchester City forward Raheem Sterling was lucky not to have been sent off for his bad tackle on Timo Werner.
With the game still goalless, Sterling flew into a tackle with his studs up and caught Werner on his knee.
Referee Anthony Taylor only issued a yellow card for the tackle but Tuchel believes it should have been red.
Tuchel said: “I just heard that it was also lucky for Raheem Sterling to be on the field because he had a huge foul against Timo Werner.
“You need these things. I am not here to talk about, I have no reason to talk bad about the referee, they are doing their best and this is how it is.
“I absolutely can admit you need a bit of luck, also with offside decisions and with decisions like this. This will never change.”