Celtic face problems at the heart of defence with Kristoffer Ajer (thigh) doubtful and Jozo Simunovic (knee) out of the visit to Livingston.
James Forrest and Callum McGregor are expected to come through having picked up knocks in Sunday's Scottish Cup win at St Johnstone.
Hatem Abd Elhamed is pushing for a Celtic return from a groin injury but might not be risked on the artificial surface while Olivier Ntcham (calf) and Mikey Johnston (knee) remain out.
Gary Holt, meanwhile, assess his Livingston squad ahead of meeting at the Tony Macaroni Arena on Wednesday night.
Midfielder Marvin Bartley is suffering from an ankle problem.
Chris Erskine (groin) remains out while Cece Pepe is still working his way back from injury.
Celtic provisional squad
Forster
Frimpong
Bauer
Hayes
Ajer
Bolingoli
Taylor
Jullien
Bitton
Brown
McGregor
Rogic
Christie
Forrest
Elyounoussi
Edouard
Klimala
Griffiths
Elhamed
Bayo
Bain
