His absence will be offset in part by the return of Tam Scobbie, who has completed a two-match retrospective ban. The defender was found guilty of attempting to headbutt Hearts' Brad McKay during a tempestuous match in Perth last month.
Scobbie has been welcomed back into contention by his manager, though. "It's unfortunate that Frazer has accumulated the penalty points but suspensions are part and parcel of football at this stage of the season," said Tommy Wright. "We are fortunate to have Tam available again and there are options open to us tactically.
"We expect an extremely tough game in Glasgow. Celtic are on a great unbeaten run and will be looking to keep it going and tie up the title as quickly as possible. But this is the sort of game my players relish. We can measure ourselves against the best in the country."