Chelsea skipper John Terry is suspended after picking up his fifth booking of the season. With fellow centre-back Ricardo Carvalho not due back from injury until next week, Branislav Ivanovic and Alex will both start. Hilario will continue in goal in place of the absent Petr Cech - also due back next week - while Joe Cole and Michael Essien remain out longA round-up of the weekend's team news ahead of the FA Cup fifth round, with Chelsea skipper John Terry unable to turn out for his new boss.
Click on the relevant links below the picture to see predicted line-ups, players to watch and updates on injures and suspensions
Watford hope to have captain Jay DeMerit return to the heart of their defence. Midfielder Gareth Williams and goalkeeper Mart Poom are long-term absentees.