Middlesbrough v Arsenal
Middlesbrough are waiting on the fitness of defenders Gareth Southgate and Ugo Ehiogu.
Full-back Danny Mills could return to the squad, but Colin Cooper continues his battle against a hamstring problem.
Jose Antonio Reyes is set to make his full debut as Arsenal attempt to overturn a 1-0 deficit.
Reyes is likely to be joined by Patrick Vieira, Edu, Martin Keown and Pascal Cygan, although Arsene Wenger will also field some of his younger players.
Middlesbrough squad: Schwarzer, Jones, Mills, Queudrue, Parnaby, Davies, Southgate, Ehiogu, Mendieta, Boateng, Zenden, Doriva, Juninho, Downing, Greening, Maccarone, Nemeth, Ricketts, Job.
La Leeds-ottelussa: Schwarzer, Davies (Parnaby 53), Riggott, Southgate, Queudrue, Mendieta, Boateng, Doriva, Zenden, Juninho Paulista (Ricketts 85), Maccarone (Job 74).
Subs Not Used: Jones, Downing.
Arsenal squad: Stack, Holloway, Lauren, Toure, Cygan, Keown, Clichy, Cole, Vieira, Gilberto Silva, Edu, Parlour, Pires, Reyes, Bentley, Owusu-Abeyie, Thomas, Smith, Skulason, Papadopulos.
Su Man C-ottelussa: Lehmann, Toure, Campbell, Lauren, Cole, Pires (Cygan 84), Ljungberg (Edu 59), Parlour, Silva, Bergkamp (Reyes 69), Henry.
Subs Not Used: Stack, Bentley.
Colchester v Coventry
Colchester will be without four players for the FA Cup fourth-round replay.
Sam Stockley serves a one-match ban, Jamie Cade is cup-tied, Paul Tierney did not complete his loan move from Manchester United in time, while Andy Myers continues his recovery.
Coventry are sweating on the fitness of striker Andy Morrell (calf).
But boss Eric Black believes Morrell has a fair chance of making the trip with the Sky Blues otherwise at full strength. (BBC)