If Manchester United legend Roy Keane did agree to face his old enemy Jason McAteer in a boxing match, he'd have quite the trainer in his corner. 

Keane, 52, made many enemies over the course of his career, but one of his biggest was a player he shared the dressing room with for the Republic of Ireland. Despite playing for the same country, Keane infamously elbowed McAteer during a Premier League clash against Sunderland all the way back in 2002.

After the Irishman said he "deserved" the elbow in a recent interview, McAteer, 52, furiously responded to the now football pundit with an explosive tweet. The ex-midfielder also recently laughed he would love the opportunity to smack the ex-United skipper in the ring. If the pair do one day fight., former boxing professional Gary O'Sullivan said he would be in Keane's corner.

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He took to X, formerly known as Twitter and wrote: "I'll gladly train Keano for this. I'm sure we'll manage to batter McAteer and might even squeeze a sneaky elbow or two in there before Keano delivers the KO blow."

O'Sullivan fought professionally between 2008 and 2022, including against the likes of Billy Joe-Saunders, Erislandy Lara, Chris Eubank Jr and Jose Medina. He retired last year with an impressive record of 31 victories (21 by TKO) and only five defeats.

Would you like to see Roy Keane and Jason McAteer box each other? Let us know in the comment section below

Gary O'Sullivan pose during his official weigh-in at Barclays Center on May 27, 2022 in Brooklyn, New York.
O'Sullivan enjoyed quite the career
Roy Keane on The Overlap
These days Keane is a pundit and often appears on The Overlap podcast

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Like all good boxing rivalries, there is an awful lot of needle between Keane and McAteer. Not only have the former Ireland internationals not seen eye-to-eye for the last 20 years, the heat between them has seemingly got hotter.

When asked if he was ever friends with McAteer, Keane told the Overlap: “I wouldn’t go that far. Absolutely not, just because you play with someone doesn’t mean you’re mates.

Roy Keane elbows Jason McAteer during a 2002 clash between Manchester United and Sunderland
Many fans still remember Keane's elbow on McAteer

“What used to get to me was players that shout their mouths off. I didn’t mind lads kicking me or booting me, honestly. But McAteer, as usual, had plenty to say for himself. I didn’t deserve to be sent off in that game, absolutely not. If you look back at it, I didn’t even catch him.”

As well as telling Keane to "bore off" on social media, McAteer said in another television appearance he would like to take on Keane in the ring. “I’d rather him come in here now and we just go let bygones be bygones," McAteer said to beINSports. "Or we can get in the ring for a million pound each and fight it out! Eddie, you watching?”