Spanish left-back Jose Enrique has successfully undergone knee surgery but will be out of action until February.
The 27-year-old Liverpool defender, made his last start on 5 October in a 3-1 win over Crystal Palace before succumbing to injury.
Signed from Newcastle United in August 2011 for £6m, he has started only six Premier League games this season.
He made a second-half appearance in the 4-0 win over Fulham on 9 November but the problem flared up again.
A club statement suggests “Enrique is expected to return to full training at Melwood in around 10 weeks’ time.”