Spurs captain Ledley King is to push himself in training in the next fortnight to determine whether he needs surgery.
The England defender trained on Friday morning as he bids to overcome the groin injury that has blighted his season.
The north London club want to him to push on in the next two weeks to decide whether he needs surgery, which would then see him out for at least a month.
"He will push his training on and really push himself for the next two weeks," Spurs boss Harry Redknapp said.
"We need a decision by the 23rd of this month. The lady who would operate goes away between the 23rd and the 10th January.
"If he breaks down then he will have the op.
"He would be out for four or five weeks after the operation."
Meanwhile, Redknapp also revealed Rafael van der Vaart and Younes Kaboul could both be fit for next Sunday's Premier League game with Chelsea.
Both will miss Saturday's trip to Birmingham and Tuesday night's final UEFA Champions League Group A game at FC Twente with respective hamstring and hip injuries.