WILLIE Collum has been appointed the match referee for the Rangers v Celtic match on Sunday.
The Scottish FA announced the appointments via its website on Tuesday morning.
Collum will be assisted for the Scottish Premiership clash by Graeme Stewart and David Roome, with Nick Walsh taking up the role of fourth official.
Celtic currently sit three points ahead at the summit and have a goal difference 14 better than their rivals.
The previous two Glasgow derbies this term have been officiated by Kevin Clancy (at Ibrox on August 29) and Bobby Madden (at Parkhead on February 2).
Elsewhere, John Beaton will take charge of Dundee v Aberdeen, Don Robertson has Hibernian v Dundee United and Craig Napier refs Motherwell v St Mirren. Ross County v Hearts will be officiated by Gavin Duncan while Clancy takes St Johnstone v Livingston.
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