Source: Evening Standard https://www.standard.co.uk/sport/anthony-joshua-open-to-boxing-an-mma-fighter-and-predicts-landslide-win-in-floyd-mayweather-vs-conor-a3616486.html
I'd probably get beaten. The only thing that they can't do is submissions, but they can kick, elbow, bite - whatever they want. Just no submissions.
"I can't beat a guy (via submission). That takes a lot of time to learn the skills and submissions, which I don't have the time for, but when it comes to pure aggression and fighting rules, I can definitely fight, so I don't mind that.
"It wouldn't be a problem. If you look at most boxers who've crossed over to MMA, they get beaten on the ground. James Toney, Roy Jones, they were phenomenal boxers but they just couldn't compete in the cage because of the 'ground and pound' game.
"I've been away with the family and need to get back to reality. Sitting on the beach getting my toes rubbed, that's not the life of an athlete.
"I've got to get back to the gutter, keep organised, keep disciplined. I've done my holidays and need to get back to the military mindset I live."
The likelihood remains that McGregor will convincingly lose to the finest boxer of the modern era, potentially minimising the appeal of future crossover fights.