I do think the ref deserves a mention. He got two horrible decisions wrong early with the handballs for the penalty and one on foden when he chested it but after that I think he handled it very well.
Was sensible, didn't blow every time a player touched another which went both ways, both sides not getting fouls that probably were. He handled the psg temper tantrums really well also even though he booked zinchenko wrongly. He probably could have sent 1 or 2 off late on with some of those challenges but I think yellows were the right call. Further reds would have turned it into a farce, he recognised the game was over and just tried to see it out without it boiling over. Good performance from him in a difficult game to ref.