Both the Celtic ultras group the Green Brigade and Rangers ultras group the Union Bears have been spotted in the city centre in the lead-up to the game.
The footage - seemingly shot from within the HMV store on Argyle Street - shows Christmas shoppers forced to take shelter as a large number of fans run past, with a heavy police presence and PYRO being lit right in front of them.
Just moments after the Rangers ultras run past the shop, they are swiftly followed in the footage by a group of Celtic ultras.
THIS is the shocking moment that saw Celtic and Rangers ultras clashing in Glasgow city centre ahead of the Premier Sports Cup Final.
Shock moment Celtic & Rangers ultras clash as terrified Christmas shoppers left petrified by pyro in doorway Sponsored by.
