Arsenal striker Nicklas Bendtner has suffered a setback in his return from injury and is now not due to be fit until the New Year.
The Denmark international underwent minor surgery on 10th November after picking up a groin problem in the 3-0 victory over Tottenham.
It was thought he might be out of action for around four weeks and was close to a return.
But Arsenal boss Arsene Wenger has confirmed the player is now out until the New Year.
Wenger told the club's official website: "Let's say the New Year.
"It is quite disappointing because he looked quite sharp and he was short from coming back into the squad."
Meanwhile, the Gunners will be without Emmanuel Eboue for Sunday's clash at Liverpool, which is being shown on Sky Sports 1 and Sky Sports HD1 at 4pm.
Eboue is out after picking up a hamstring problem in the recent 2-0 victory against Stoke, as is Tomas Rosicky.
But Wenger confirmed that William Gallas, Armand Traore, Cesc Fabregas and Andrey Arshavin are expected to recover in time, despite picking up knocks and bruises last weekend.
He added: "We have problems with many players. If you look at the players who started the game against Stoke certainly Eboue and Rosicky will miss this game. Everybody else should make it.
"There are little knocks and bruises here and there. Who could come back? Eduardo and (Abou) Diaby maybe could make the squad. That is the news we have at the moment.
"Gallas, Traore are still doubts but I think they will make it. Fabregas has a back problem and Arshavin has got a bruised foot too but I think they will make it too."