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GLASGOW, SCOTLAND - FEBRUARY 19: Stuart Armstrong of Celtic (R) celebrates during the UEFA Europa League Round of 32 match between Celtic FC and FC Internazionale Milano at Celtic Park on February 19, 2015 in Glasgow, United Kingdom. (Photo by Claudio Villa - Inter/Getty Images)

GLASGOW, SCOTLAND - FEBRUARY 19:  Stuart Armstrong of Celtic (R) celebrates during the UEFA Europa League Round of 32 match between Celtic FC and FC Internazionale Milano at Celtic Park on February 19, 2015 in Glasgow, United Kingdom.  (Photo by Claudio Villa - Inter/Getty Images)