Jack Butland was Rangers’ Player of the Year but the goalkeeper made a rare mistake to hand Celtic the Scottish Cup trophy. Hampden Park was rocking ahead of kick-off with both sets of fans chanting loudly. But the Old Firm derby was far from a classic on the pitch with neither side creating much in front of goal. Rangers thought they had taken the lead midway through the second half when Abdallah Sima put the ball in the back of the net. But referee Nick Walsh disallowed the goal after a VAR check spotted Nicolas Raskins had shoved Joe Hart. Tensions were rising on the pitch as the prospect o…