Cape Town - Chelsea will hope influential midfielder Cesc Fabregas is over a recent illness as they host relegation-threatened Burnley on Saturday.
Fabregas played most of the midweek Champions League match with Paris St-Germain but should be fresher for the trip to Burnley.
To highlight Fabregas' impact since arriving from Barcelona, the Spanish midfielder has contributed to his team's success with 15 assists - one shy of doubling the tally of the league's next best creator - Swansea City's Gylfi Sigurdsson.
Chelsea coach Jose Mourinho has been shuffling his central defensive combination at times this season and captain John Terry admits the club have a difficult choice.
"Kurt (Zouma)'s done really well," he said.
"When he plays he's been great and when Gaz (Gary Cahill) plays he's been great,' said Terry.
"We will rotate and there are enough games to share around. Obviously we all want to play every game, those two are fighting it out at the moment but it could be me at any time.
"What's important is that we remain top of the league and everybody gets game time."
Chelsea vs Burnley kicks off at 17:00 at Stamford Bridge.