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GLASGOW, SCOTLAND - APRIL 23: Rangers manager Pedro Caixinha looks on from the sideline during the William Hill Scottish Cup Semi-Final between Celtic FC and Rangers FC at Hampden Park on April 23, 2017 in Glasgow, Scotland. (Photo by Mark Runnacles/Getty Images)

GLASGOW, SCOTLAND - APRIL 23: Rangers manager Pedro Caixinha looks on from the sideline during the William Hill Scottish Cup Semi-Final between Celtic FC and Rangers FC at Hampden Park on April 23, 2017 in Glasgow, Scotland. (Photo by Mark Runnacles/Getty Images)
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Getty Images Sport Mark Runnacles