Celtic boss Tony Mowbray has hinted that captain Stephen McManus may be dropped for Sunday's Old Firm derby.
The Bhoys take on Rangers at Ibrox at the weekend and lead the SPL by four points heading into the encounter.
Mowbray has been tinkering with his centre-half pairing of late and was critical of McManus following the Bhoys' 1-1 Europa League draw with Rapid Vienna on Thursday.
Dutch defender Glenn Loovens looks set to return to the side as Mowbray admitted his squad rotation is likely to continue, with McManus expected to be sacrificed.
"Glenn Loovens might be better suited to Ibrox," Mowbray told the Daily Record.
"The fact that Stephen is the captain doesn't create any dilemma for me. If he is not able to play then Gary Caldwell becomes the skipper.
"There is no issue there for me and the captaincy will have no bearing on the team I pick to play Rangers."
Injured pair Paddy McCourt and Andreas Hinkel sat out the midweek draw at Parkhead but are in contention to make the squad to face their old foes.
"They're touch and go," added Mowbray. "If they train then they can be considered for Ibrox. If they can't train then they're out.
"I know Paddy's the type who can glide past five players and score a goal but I have to pick the best, and the fittest team to play Rangers."