Scott Brown and James Forrest are expected to miss Celtic's Scottish Premier League encounter with St Mirren on Saturday through injury.
Brown is thought to have had a recurrence of a recent hip problem, while Forrest is struggling with a groin injury.
Kris Commons could also be sidelined for the match at St Mirren Park with a hamstring complaint.
Celtic go into the contest two points clear at the top of the SPL table.