The Hoops goalkeeper is on the mend following a neck injury which has kept him out of the last two matches and manager Neil Lennon will "not take any chances with him." Midfielder Kris Commons is a doubt with a rib injury and will be assessed while defender Kelvin Wilson returns from suspension.
St Mirren could give their new Portuguese arrival Esmael Goncalves his debut against Celtic after he was granted international clearance. The Rio Ave striker has joined the Paisley side on a loan deal until the end of the season and could partner 12-goal striker Steven Thompson in attack as the Buddies seek to halt an alarming eight-game run of straight defeats against the Glasgow giants. Boss Danny Lennon, however, says it is "touch and go" whether midfielder Kenny McLean will recover in time from his knee ligament injury to play a part in the Hampden show-piece. Darren McGregor (knee) and Thomas Reilly (ankle) definitely miss out.