Brendan Rodgers has claimed that Celtic will cope without key defender Jozo Simunovic for their Champions League Group B game with Bayern Munich on Wednesday night.
The Bosnia & Herzegovina international tore his hamstring in September and a "reaction to the injury" has ruled the centre-back out of the trip to Germany.
With Simunovic out, Nir Bitton, Kristoffer Ajer or Erik Sviatchenko could be slotted into the Hoops defence, as Celtic look to build on their 3-0 away win at Anderlecht on September 27.
"He's come back into the team having been injured, you always want your top players fit, but he has had a reaction to the injury, so it's disappointing," Rodgers told Sky Sports News.
"We've had to get used to injuries, especially across our back line. Ideally, you want to have a set pair at the back, but we've had to constantly rejig the team. But whoever I put in there always does a great job."
Both Celtic and Bayern have three points from their opening two rounds of Champions League games heading into their two head-to-head clashes.