The Glasgow Derby between Celtic and Rangers often produces controversy on the pitch and yesterday’s Scottish Cup final was no different. With John Beaton on VAR, there was the potential for more after the SFA whistler’s performance on the refereeing technology at Tynecastle in Hearts’ 2-0 win over Celtic back in March. That day produced weeks of aftermath as Brendan Rodgers’ post-match comments earned him a one-match ban from the SFA. On Saturday, there was a big penalty call in for Celtic after Rangers defender, Ben Davies, appeared to handle the ball in the Ibrox side’s penalty area. There …