Celtic thanked WWE superstar CM Punk after he disrupted a World Heavyweight Championship match at the Hydro in Glasgow. As we discussed earlier, the Chicago favourite was spotted in one of the club’s Celtic shops ahead of the Clash At The Castle pay-per-view event, sparking rumours he would be appearing. He followed through on that possibility to ruin the night of Rangers-daft WWE rival Drew McIntyre, who was embroiled in a match with current champion Damian Priest for the title. Just as it looked like McIntyre would get the pin on Priest, CM Punk burst into the ring disguised as a referee to …