Iron Mike’s collection of boxing memorabilia and belts is arguably one of the most valuable in the sport.

But his collection of football shirts is also something to behold.

A Twitter thread of the former undisputed heavyweight champion wearing what are now classic shirts has started doing the rounds.

The boxing legend’s shirt collection boasts a now 22-year-old Umbro-produced England top – which costs a pretty penny nowadays.

That England shirt, however, isn’t the oldest owned by Tyson – who also has a 1998-1999 Manchester United home top in his collection.

Tyson has also donned a 1998 Scotland home shirt – which he wore before his Hampden Park tussle with Lou Savarese in 2000.

In 2013, Tyson was surprisingly gifted a Wolves home shirt by his former sparring partner Joe Egan.

The gift came after Egan showed him comments from then-Wolves boss Dean Saunders likening the club’s decline to his.

Tyson, according to the Express & Star, said of Saunders’ comments: “He’s right.

“I went from the best in the world to a very bad place.

“I don’t know that much about football but it sounds like Wolverhampton have a manager who can turn the team around.

“Joe is going to let me know how they get on.

“When I’m over in England I would like to see them in action.”

Tyson, over the years, has also been snapped wearing Benfica, Rangers, Brazil and Argentina tops.

But perhaps the most random shirt Tyson has ever been spotted wearing is a Peterborough United top.

Tyson was in attendance at London Road in July 2010 to take in a pre-season friendly between Posh and West Ham ahead of a fan event.

But he’d never heard of Posh before he arrived in East Anglia.

He said: “I’ve never heard of Peterborough before but as soon as I heard it was West Ham I thought, ‘We’ve got to really give it to them.’”

Tyson may not have known who Peterborough were before turning up in town.

But the fact he donned one of their tops will likely forever endear him to Posh fans.