St Johnstone have rejected the Scottish Football Association's offer of a two-game suspension for Frazer Wright.
The SFA issued a Notice of Complaint against the Saints defender in reaction to an incident in Sunday's defeat to Celtic.
Wright, who scored an own goal in his side's 4-0 drubbing, is alleged to have breached Rule 200 of the disciplinary rules by striking Hoops defender Mikael Lustig with his elbow.
The Swede reacted furiously to the clash and had to be restrained by team-mates before being booked by referee Alan Muir for his continued protest.
The former Kilmarnock defender will now contest the SFA's proposed punishment at a "fast-track tribunal" at Hampden Park on Thursday.
Whatever the outcome, Wright is almost certain to be suspended for Saints' final SPL game of the season against Motherwell this weekend.