Leighton Baines will miss Saturday's trip to Burnley after suffering a setback with his recent hamstring injury.
The Blues left-back has not featured since last month's 3-1 home win against Middlesbrough and, at his press conference on Thursday, boss Ronald Koeman confirmed the defender would not be in his matchday squad for the clash at Turf Moor.
Koeman said: “It is difficult because Leighton did the normal programme to come back - he had good sessions and played 45 minutes in a behind-closed-doors game against Wigan.
“But then the day after he was a little bit stiff and he went for a scan that showed he had a little setback.