The Celtic winger James Forrest has only an outside chance of making the Champions League decider against Spartak Moscow, according to their manager Neil Lennon.
Forrest has not played since last month's 2-0 defeat by Kilmarnock and faces a race against time to make the visit of the Russians on 5 December.
Celtic must better Benfica's result away to Barcelona in the final group game in order to qualify for last 16.
Lennon said: "James Forrest had a scan and it has come through that he has got a tendon problem in the hamstring area.
"We hope, and it's an outside chance, he'll be fit for Spartak."
Forrest will miss tomorrow's Scottish Premier League match against Inverness with Thomas Rogne (calf), the captain Scott Brown and Joe Ledley (both hip) and Charlie Mulgrew (illness) all doubtful.