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GLASGOW, SCOTLAND - APRIL 17: Erik Sviachenko of Celtic celebrates after scoring their first goal during the William Hill Scottish Cup semi final between Rangers and Celtic at Hampden Park on April 17, 2016 in Glasgow, Scotland. (Photo by Jeff J Mitchell/Getty Images)

GLASGOW, SCOTLAND - APRIL 17:  Erik Sviachenko of Celtic celebrates after scoring their first goal during the William Hill Scottish Cup semi final between Rangers and Celtic at Hampden Park on April 17, 2016 in Glasgow, Scotland.  (Photo by Jeff J Mitchell/Getty Images)