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GLASGOW, SCOTLAND - NOVEMBER 26: A fan walks past a Celtic logo prior to the UEFA Europa League Group A match between Celtic FC and AFC Ajax at Celtic Park on November 26, 2015 in Glasgow, United Kingdom. (Photo by Mark Runnacles/Getty Images)

GLASGOW, SCOTLAND - NOVEMBER 26:  A fan walks past a Celtic logo prior to the UEFA Europa League Group A match between Celtic FC and AFC Ajax at Celtic Park on November 26, 2015 in Glasgow, United Kingdom.  (Photo by Mark Runnacles/Getty Images)