Rafa Benitez has revealed John Terry will not feature against Wigan this weekend as he's suffered a setback in his recovery, according to ESPN.
The Chelsea captain is suffering from an inflamed knee - he's still on the comeback trail following his most recent knee injury - and will not be available for selection on Saturday.
The 31-year-old picked up the original problem against Liverpool on November 11 after colliding with Luis Suarez. A extended period on the sidelines followed, as Terry sat out the Club World Cup tour to Japan, but he returned to first-team action on January 12.
However, Benitez has now confirmed Terry has suffered a setback, and will not make the trip to Wigan.
"We have just two players injured: [Oriol] Romeu, who is a long-term injury and now John Terry has an inflamed knee," Benitez told reporters. "It is not serious, but he will not be available for tomorrow.
"The other players who were injured, Petr Cech and Demba Ba, are available. Demba was training yesterday with a mask, and we will make a decision."
Chelsea will be looking for three points at home to the Lactics as they look to consolidate a top four Premier League finish.
The Blues sit in third place at the moment, but Tottenham, Everton and Arsenal are closing fast after Chelsea dropped a number of points in recent matches.
Eden Hazard should return for the Stamford Bridge side, after completing his three-match suspension following his run-in with a Swansea ball-boy last month.
Chelsea have never lost at home to Roberto Martinez's side, but the Benitez reign has been characterised by sloppy home performances this season - the club has dropped points at home to Southampton and Queens Park Rangers, while Swansea took a 2-0 victory in the Capital One Cup semi-final first-leg back to Wales.