Southampton are still without Victor Wanyama, who is serving the second match of a five-game suspension.
Florin Gardos and Jay Rodriguez are both back in training, although they will need a few weeks to build up their fitness after long-term injuries.
Chelsea captain John Terry is not yet ready to return from a hamstring injury, although he has not been ruled out of Tuesday’s game at Norwich.
Alexandre Pato will not feature as he is still building up his fitness.
Fellow striker Radamel Falcao remains injured.
MOTD COMMENTATOR’S NOTES
Steve Wilson: “Chelsea’s major aims this season are clearly the Champions League and FA Cup, but they would dearly love to continue their sequence of 19 consecutive seasons finishing in the Premier League’s top six.
“To do that, they may have to overhaul Southampton, currently in that sixth spot having dropped only two points from the last six games and keeping clean sheets in every one.
“The last time the impressive Fraser Forster conceded a goal was to Diego Costa last March in a 1-1 draw at Stamford Bridge.
“Costa, like Forster, is now back to his best with nine goals in the 12 games he has played since Guus Hiddink took over. It could be a fascinating duel between striker and goalkeeper on Saturday.”