CM Punk pictured in Celtic store before WWE Clash at the Castle amid feud with Rangers daft Drew McIntyre

This week has been all about Rangers-daft WWE superstar Drew McIntyre and his return to Scotland for Clash at the Castle.

The big Scotsman was inducted into the Scottish wrestling Hall of Fame at Ibrox and he will main event the first ever premium live event in the country for the world title on a busy yet monumental weekend for the big man from Ayr.

But while McIntyre will face Damian Priest for the championship, one man who could get involved in the match in some way is CM Punk who has arrived in Glasgow ahead of this evening's live show.

The former champ was spotted in a Celtic shop looking to buy the jersey of his grapping rival's rivals as fans speculate he could potentially cost McIntyre his shot at gold.

Punk has been embroiled in a feud with McIntyre after being injured by the Scot at the Royal Rumble this year but he is believed to be close to an in-ring return with medical clearance on the horizon.

The show at the Hydro would likely explode if Punk arrives wearing the green and white Hoops to cost the Ibrox-supporting McIntyre his chance in front of his home crowd.