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EDINBURGH, SCOTLAND - APRIL 20: Rangers manager Mark Warburton looks on during the Scottish Championship match between Hibernian and Rangers at Easter Road on April 20, 2016 in Edinburgh, Scotland. (Photo by Ian MacNicol/Getty images)

EDINBURGH, SCOTLAND - APRIL 20:  Rangers manager Mark Warburton looks on during the Scottish Championship match between Hibernian and Rangers at Easter Road on April 20, 2016 in Edinburgh, Scotland. (Photo by Ian MacNicol/Getty images)