A FORMER Celtic player has been forced into a humble apology after he was caught breaking lockdown rules. 

Charlie Mulgrew, who saw five Scottish Premiership titles won during his time at Parkhead, said he was "deeply sorry" after he was filmed partying with friends while watching the Old Firm game on Sunday at a friend's shed. 

He was caught on camera with at least eight other men ignoring social distancing rules at his mate's garden bar watching his former team, the Daily Record reports. 

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He told the paper: "After the lockdown was relaxed I was invited round to my mate’s house for a few drinks in his garden as he has a bar in his shed.

“I thought that was absolutely in accordance with the Government’s guidance.

“We had a few beers but more people started to turn up than I had expected.

“There were about eight of us in the end and when the numbers started to build I should have gone up the road.

“But I chose to stay and watch the Old Firm game and that was a massive error of ­judgment on my behalf.

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"I wish I had just followed my gut instincts and gone home. I didn’t do that and I have to take responsibility for my own actions.

“I understand what the whole country has been going through over the last year. We’ve all had to make horrible sacrifices in the face of this pandemic and I’m genuinely mortified I have let people down by acting in this way.

“I’m deeply sorry for the mistake I have made. I can only apologise sincerely and assure everyone that it will never happen again.”

The paper reported that Mulgrew’s parent club Blackburn Rovers and loan club Fleetwood Town confirmed they have launched a probe.