Conor McGregor's coach John Kavanagh says he would be "very surprised" if the two-weight former UFC champion doesn't fight again.

The 30-year-old Dubliner announced his retirement from mixed martial arts last month via Twitter but a week later suggested a comeback was on the cards after a tweet concluding with the statement "Now see you in the Octagon".

Speaking on RTÉ One's The Late Late Show last night, McGregor's long-time coach Kavanagh said: "Training MMA is fun but training for professional fighting is very, very tough. It's very tough on the body.

"Usually, your motivation for those things is to win a world title or to make some money; and he's done those things.

"I found it hard to see what was going to motivate him to keep going and keep putting himself through that grind.

"I have seen a bit of a resurgence in his passion and his love for it and I think if the right contest comes along, something that is interesting to him, something that will get the crowd going, I'd be very surprised if he doesn't fight again and it could even be this summer."

After adding the UFC lightweight belt to the featherweight strap in 2016, McGregor took a lucrative detour into boxing, earning a reported $100m for his defeat to multiple former world champion Floyd Mayweather Jr.

The Crumlin native's return to the octagon last October ended badly - a fourth-round submission to current lightweight champ Khabib Nurmagomedov was followed by a brawl instigated by the Russian (fined $500,000) but that also result in a fine for McGregor ($50,000).

McGregor and Nurmagomedov have been insulting each other on social media in recent weeks but the Irishman would probably be expected to work his back into contention for a title shot rather than being handed an immediate rematch against an opponent who comfortably defeated him last time out.

McGregor has had his share of legal troubles in recent years. He was sentenced to community service for his part in a melee after a UFC promotional event in Brooklyn in April 2018 and is due to stand trial in Miami next month on charges of robbery and criminal mischief for allegedly smashing a fan's phone and walking away with it.

Kavanagh said he doesn't condone his protégé's actions but added that he had "paid for his mistakes".

"He has made mistakes, mistakes that I absolutely don't condone. I know he regrets them, he's paid for them, he's trying to learn from them, he's trying to move on," said Kavanagh.

"I hope we return to doing the positive things, the goal-setting, the work ethic, going for something that's seen as impossible, they're the qualities that I love in Conor, that I love talking about."