Reporter: When Palmer was at home at night, his left little toe accidentally hit the door and was injured.

Today Chelsea coach Maresca confirmed at the pre-match press conference that Palmer accidentally injured his toe at home and will miss the Barcelona + Gunners game.

Daily Mail Chelsea reporter Kieran Gil later followed up with a report: When Palmer was at home at night, the little toe of his left foot accidentally hit the door.

Palmer first suffered an injury in mid-August and completed his comeback on September 14. His groin injury worsened after the game against Manchester United on September 21 and he was about to return.