Reading midfielder John Oster must go under the knife in a bid to finally clear up his ankle injury.
The Wales international has only started one game for the Royals so far this season, and has been troubled by the injury since facing Everton back in August.
Despite physiotherapy and a couple of attempted comebacks, the problem has failed to clear up and Oster must undergo surgery in the hope of putting an end to the problem.
As a result, he is due to go under the knife next Monday, but at present it is unclear how long the operation will keep him out for.
Reading physio Jon Fearn told the club's official website: "We saw a specialist on Tuesday to discuss the problem.
"He agreed that we've done as much as we can in terms of conservative treatment.
"Now we'll look at surgery next Monday.
"How long he'll be out depends on what we find when we go in. He has an inflamed ankle, which is aggravated by some bone in the back of the ankle.
"We'll have that bone removed, and then allow the joint to heal through rest and recuperation."
Meanwhile, Michael Duberry has returned to training after a rib problem and may be included in the squad for Saturday's game with Liverpool.