Arsenal captain William Gallas says he's big enough to handle the knockers.

"If I receive criticism, it does not unsettle me if it is warranted. I was criticised for the second goal against Aston Villa on Saturday, no problem, I made a mistake," said Gallas.

"But sometimes I am criticised just because the team is struggling."

Gallas continued: "Defenders are judged whether the team wins or not. There have been matches when I have played better than when I faced Manchester United, but if we've lost, it isn't recognised.

"But now, the fact that it is Manchester United, there is pressure, a lot of things around this game, having won 2-1, we immediately talked about the match of Gallas. I'm not complaining.

"But I know myself, if I had a big game or not. And I have been better than that."