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GLASGOW, SCOTLAND - OCTOBER 20: Rangers manager Mark Warburton reacts during the Petrofac Training Cup Quarter-Final match between Rangers and Livingston at Ibrox Stadium on October 20, 2015 in Glasgow, Scotland. (Photo by Ian MacNicol/Getty Images)

GLASGOW, SCOTLAND - OCTOBER 20:  Rangers manager Mark Warburton reacts during the Petrofac Training Cup Quarter-Final match between Rangers and Livingston at Ibrox Stadium on October 20, 2015 in Glasgow, Scotland. (Photo by Ian MacNicol/Getty Images)