Former Manchester United striker Campbell has not started since beating the Blues in the last round. The hot form of 13-goal pair Bent and Kenwyne Jones has restricted his chances, but the door is open at the Stadium of Light tonight.
Campbell said: "Credit to Benty and Kenwyne because they've been in fine form scoring goals and playing well. I am content to sit on the side of a good team for a bit, but when I get my chance, hopefully I can take it.
"I've played in most of the games this season so I feel very involved. It is a bit hard when you are coming on as a sub to pick up the pace of the game. You probably see the best of people when they start games and hopefully that will be the case with me if I get into the side against Villa."