Celtic captain Scott Brown is in contention to face Inverness tomorrow - but is still likely to face surgery after the visit of Spartak Moscow.
Neil Lennon stated on Tuesday that Brown looked like needing an operation on his ongoing hip problem after failing to last 90 minutes in the 2-1 defeat against Benfica.
But the Celtic manager later discovered the midfielder had gone off with cramp in his legs.
Lennon will now look to keep his skipper going until the Champions League group decider against Spartak Moscow on 5 December, before referring him to a consultant.
Lennon said: "Scott Brown is in contention to play tomorrow remarkably. We will refer him after Moscow and see how he is.
"The problem is we don't have the time to let him settle down.
"Looking at the condition, it normally requires surgery.
"The problem on Tuesday night was he was just out of condition a bit because he has not been training.
"He has trained in the last couple of days and we are doing some physical work and see what reaction we get."
"Looking at the condition, it normally requires surgery" - Neil Lennon
Lennon revealed it would be an eight-week rehabilitation process once Brown goes under the knife.
"So he would miss maybe the majority of December and January and have him back in February, but we do have a two-week winter break in January," he added.