"Everyone was waiting for us to make mistakes and this game (against Birmingham) was what everyone was waiting for and William got criticised.
"I think William is a great player, we all know he is a great player. The reaction he had personally I wouldn't have done the same. But he's passionate, the guy is really into Arsenal and he wants us to do well.
"First seven months: nothing to say about him, and then a game changed everything. Once again, it's anyone's opinion."