Rumors say that two fighting worlds are about to collide in a fight between MMA superstar Conor McGregor and undisputed boxing champion Floyd Mayweather.

According to sports analyst Colin Cowherd, fans will indeed get the best of both worlds and see the two warriors brawl. However, McGregor's MMA rival Nate Diaz believes it's nothing but a big "publicity stunt."

Explaining his theory to The MMA Hour via Mirror, Diaz said that "It's great for both of them. Boxing followers will start following Conor. MMA followers are going to start following Floyd."

"They're all benefiting, and no one is losing, so they're going to keep the ball rolling," the mixed martial artist said. He even said that if Mayweather were to fight an MMA fighter, it should be him. "I guarantee I'd do better than McGregor would," Diaz said.

McGregor, on the other hand, believes that a McGregor vs. Mayweather match is born out of the boxing superstar's need of him. "He needs me. If he wants to talk, we'll talk, but it's me who's in control here," he told ESPN.

According to boxing analyst Teddy Atlas (via ESPN), there's no chance that McGregor will triumph over Mayweather. He goes onto claim that it will take the Irish champ "years" to be ready to get in the same ring with the undefeated boxer.

Atlas, however, believes that if months before the fight, McGregor trains by recreating the same atmosphere of a real fight with a pro boxer, he may very well beat Mayweather to the ground.

A McGregor vs. Mayweather is certainly something many fighting fans want to see. Both men are masters of their craft, but the battle will determined who is master of all.

Diaz believes that the Mayweather and McGregor don't have a care in the world if the fight happens. "They're both benefitting off each other's fanbases and they're both building off of it," he said.

"They're both winning right now from the talk even happening," Diaz added.