Arsenal boss Arsene Wenger admits success against AC Milan will depend on them keeping Kaka quiet.

"Kaka made the difference last year in this competition," said Wenger. "He scored 10 goals in 11 games. He made the difference against Celtic.

"He's the guy who can dominate a situation and in 10 seconds get to the other side of the box and score a goal.

"We need to be more cautious in the centre than we usually are. He's especially dangerous at counter-attacking. I don't know if I'll use Gilberto for him.

"My main worry is to get 11 fit players for the Milan game."