GLASGOW, SCOTLAND - APRIL 23: Pedro Caixinha manager of Rangers gives instructions during the Scottish Cup Semi-Final match between Celtic and Rangers at Hampden Park on April 23, 2017 in Glasgow, Scotland. (Photo by Ian MacNicol/Getty Images)
GLASGOW, SCOTLAND - APRIL 23: Pedro Caixinha manager of Rangers gives instructions during the Scottish Cup Semi-Final match between Celtic and Rangers at Hampden Park on April 23, 2017 in Glasgow, Scotland. (Photo by Ian MacNicol/Getty Images)