Harry Redknapp is waiting on the fitness of Heurelho Gomes and Ledley King ahead of Wednesday night's (May 5) crunch match at City.
The big question is whether or not Ledley's troublesome knee will settle down in time to play two matches in the space of five days after another fine display against Bolton on Saturday.
"He will come out today and have a loosener with us and then we'll make a decision.
Goalkeeper Gomes picked up a groin injury in the final minutes of Saturday's 1-0 win against Bolton.
"Again, we'll see how he is today," said Harry. "He didn't train yesterday (Monday) and he won't do too much today.
"He's been top drawer, a fantastic goalkeeper but if he's not fit Ben Alnwick will play and Jimmy Walker will be on the bench.
"We hope he's fit because he's important to us. I'm hopeful."
Vedran Corluka (ankle) is still out alongside long-term absentees Niko Kranjcar (ankle), Jonathan Woodgate (groin) and Carlo Cudicini (wrist, pelvis).