Former Arsenal striker Paul Merson has accused manager Arsene Wenger of insulting fans.
Merson wrote in the Daily Star: "What he said the other day about Petr Cech was probably one of the most disrespectful things he has ever said.
"How do you leave Cech out against Olympiakos? It was a must-win game and he left him on the bench.
"But to come out in a press conference and claim he doesn't have to justify the decisions he makes was a terrible thing to say.
"He's not talking to the press, he's talking to the fans there. They're the ones who pick up the papers and read that in the morning.
"He was brushing them aside. He was saying: 'None of you know what you're talking about. I do. Don't question me.'"