Liverpool have suffered a setback with the news that powerful midfielder Mohamed Sissoko will be out of action for three months after dislocating his shoulder.
Sissoko sustained the injury during the 1-0 Carling Cup win at Birmingham on Wednesday.
“Unfortunately Momo requires surgery which is scheduled to take place next week,” said a Liverpool spokesman.
“It is anticipated he will be out of action for three months.”
Sissoko was out for several months last season when he suffered a serious eye injury during Liverpool’s 1-0 defeat by Benfica in the Champions League.
Manager Rafa Benitez added: “They are not very common injuries, the kind he has sustained, it was his eye last season and now the shoulder.
“It was an accident but it was clear something was wrong. Momo is a player who doesn’t like to stay on the ground.
“Now we have to manage with the players we have until January and I am happy with the squad but when you lose a player that is playing every game like Momo, it is a problem.”
Benitez signed Sissoko for £5m from Valencia in July 2005.