Chelsea v West Ham preview
Chelsea will be looking to keep the pressure on their title rivals when they welcome West Ham to Stamford Bridge.
Mohamed Salah is not yet available for Chelsea. The Egypt forward's signing was confirmed on Sunday, but he has not yet arrived in England.
Striker Fernando Torres (knee) and midfielder Marco van Ginkel (knee) are the only injury absentees for the Blues.
Demba Ba could be given a rare start up front in place of Samuel Eto'o.
West Ham could hand debuts to new signings as Antonio Nocerino and Marco Borriello as both are in contention to feature.
The two Italy internationals have signed on loan until the end of the season to bolster the Hammers' squad, which is starting to recover from the injury setbacks over the Christmas period.
Captain Kevin Nolan returns from a four-match ban, with only Joe Cole (groin) a definite absentee against one of his former clubs.