RANGERS caretaker boss Graeme Murty said yesterday that Kenny Miller is a major doubt for the Old Firm derby at Celtic Park on December 30.

Miller tore his hamstring during Wednesday night’s win at Hibernian and faces a race against time to be fit for Rangers’ clash against Brendan Rodgers’s rampant outfit.

It is another blow for Murty ahead of facing Dundee today after it was confirmed midfielder Graham Dorrans will be sidelined for the next three months as he recovers from ankle surgery.