Gunnar Nelson has been by the side of Conor McGregor for years now, which gives Nelson a deeper understanding into the mind of the UFC lightweight champion.

With rumors continuing to swirl regarding a McGregor-Floyd Mayweather boxing match taking place, Nelson believes that fight could be the nail in the coffin for “Notorious'” UFC run.

“Not really, but I don’t think we would fight ever, to be honest,” Nelson said during a recent interview on Submission Radio. “We’ve been training partners since we were 17 and I don’t think that would ever happen. He would just focus on something else, to be honest. You never know what he’s going to do next. If he beats Mayweather, I’m not sure that he will ever fight again, to be honest. I don’t know, but I could see him just floating off and doing something else crazy.”

If that isn’t the case, Nelson thinks Khabib Nurmagomedov could be next for McGregor in his first title defense.

“But otherwise, maybe he’ll fight Khabib or something next if Khabib is in shape,” he said. “I don’t know, there’s something wrong with his (Khabib’s) kidneys or something after that cut. We’ll see. I don’t know what’s he gonna do. But he’s just focusing on one thing at a time and right now it’s Floyd Mayweather and I’m looking forward to that myself.”