Celtic boss Neil Lennon will be sweating on the fitness of captain Scott Brown ahead of their clash with Kilmarnock on Sunday.
According to BBC Sport, the skipper is a doubt after picking up a calf injury during midweek and will face a late fitness test.
Brown was forced off after 73 minutes of their 1-1 draw with Copenhagen on Thursday evening, as they take an away goal into the second leg.
Celtic will be hoping their influential midfielder will be fit enough to feature against Kilmarnock, or that it isn’t a lengthy lay-off.
Two players who will not feature are fullback Hatem Abd Elhamed, who is recovering from a groin injury, and forward Mikey Johnston who is a long-term absentee with knee ligament damage.
Lennon will be looking to welcome back Leigh Griffiths though, as the 29-year-old striker missed their midweek exploits in Europe.
The Celtic striker has seven goals to his name in all competitions this season, including a goal in a 3-1 victory over Kilmarnock last month.
Defender Greg Taylor is also in line to return after he missed the draw with Copenhagen, as the Hoops look to maintain their 10-point cushion at the top of the Scottish Premiership.
Celtic look to be cruising to yet another title win, and their incredible home form has been pivotal in opening up a strong lead at the top.
The Bhoys have won 14 and drawn one of their last 15 home league fixtures, a run that stretches back to last season.
In that time, Celtic have scored 45 goals while conceding just seven times during that brilliant run of form.
Both meetings between these two sides have ended 3-1 this season, and Celtic will be confident they can make it three from three when Kilmarnock visit on Sunday.
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