Kolo Toure has revealed Arsenal captain William Gallas accepts he behaved wrongly in the aftermath of their draw at Birmingham City earlier this year.
"And then after this Birmingham game he made a mistake, he knows that, and we all tried to bring him back to the team and he came back to the team well.
"But when you make a mistake it is difficult after that and I think it is not only that, we can think it was a really important part of our season."