"I think we want to play well in every competition whether it's the FA Cup, the Champions League or the League," Diaby told Arsenal TV Online. "We want to win all of them because we are a big club and we want to win trophies. This Saturday is very important to us.
"Maybe a win will give us a psychological advantage. We just want to give our best and win the game."
Unfortunately, Diaby will not get a chance to make his mark in the FA Cup this weekend. The 21-year-old suffered a calf injury against Manchester City at the start of February.