Mayweather Promotions CEO: Conor McGregor's boxing license means nothing

So, UFC champion Conor McGregor was issued a boxing license by the California State Athletic Commission on Wednesday.

So what, says Mayweather Promotions CEO Leonard Ellerbe. That doesn’t make a dream fight between the UFC king and boxing king Floyd Mayweather any more likely to become a reality.

"He got a boxing license. Congratulations to him,” Ellerbe told ESPN.com. “Conor McGregor can say anything he wants to, but he has a boss, and his name is (UFC president) Dana White. He is under contract to the UFC, and if he wanted to fight Floyd Mayweather in a boxing match he can't because his bosses wouldn't allow that to happen. ...

UFC champion Conor McGregor issued California boxing license

“They would never — and put this in bold caps — let him step into a boxing ring with Floyd Mayweather, because everyone knows what the outcome would be. He would get his ass beat from pillar to post."

Ever since his knockout of then-featherweight champion Jose Aldo last December, McGregor’s star has risen rapidly as his trash talk has never let up, even after a submission defeat to Nate Diaz at welterweight in March. McGregor avenged his loss to Diaz in an August rematch, then was granted a lightweight title shot vs. Eddie Alvarez earlier this month. McGregor defeated Alvarez by TKO at UFC 205, becoming the first fighter in UFC history to simultaneously hold championships in two weight classes.

For the better part of a year, McGregor has taken shots at Mayweather in interviews and on social media. After his historic victory over Alvarez at Madison Square Garden, McGregor told fans at a New York City nightclub that Mayweather would never fight him because “he’s afraid of a real fight.”

Conor McGregor wants $100 million to box Floyd Mayweather: 'He's afraid of a real fight'

Ellerbe scoffs at that notion and says Mayweather, who told USA TODAY Sports earlier this month he’s content being retired, simply has no interest in fighting McGregor.

“He beat world champions over a 20-year period and here's a guy, McGregor, who has about 20 fights and lost three of them, and three fights ago he was seen on the mat quitting. What are we talking about?,” Ellerbe said. “And I have a great deal of respect for what he does for a living. Floyd and I have nothing against UFC or any of their fighters. I respect all fighters who step in a ring or the Octagon, but Floyd is in the Bahamas enjoying life. He's not thinking about Conor McGregor or anyone else.

"What McGregor is attempting to do is take a page out of Floyd's book from the marketing and promotional side by using his name. The quickest way to become famous is to align yourself with another famous person, and he's done a good job of that."

PHOTOS: Conor McGregor in the UFC