Recently, UFC lightweight champion Conor McGregor said he was close to inking a deal to fight Floyd Mayweather. But according to Top Rank chief Bob Arum, as is normally the case with Mayweather fights, money could be the cause of delay.

“I think the only impediment there is the UFC because the UFC doesn’t treat fighters the same way the boxing promoters do – in other words, UFC fighters get so much less than boxers do,” Bob Arum told FIghtHub in an interview.

“They proposed a deal to Conor [McGregor] that on his share of the purse, they take 50 percent.” As a note, McGregor has repeatedly said that his number to fight Floyd Mayweather is $100 million.

But as noted by Bloody Elbow, Bob Arum is not involved in the negotiations, so there is no reason to believe that he would be privy to the details of the prospective billion-dollar fight between Conor McGregor and Floyd Mayweather.

Arum, though, knows a thing or two about dealing with Mayweather and the Money Team, having had to go through years of discussions before they were able to finalize a fight between the undefeated boxer and Manny Pacquiao.

Bob Arum also offered his take on how he sees the fight going, saying that Conor McGregor fighting Floyd Mayweather in a boxing match is not really a fight. While both camps have consistently issued sound bites to feed the hype surrounding the potential fight, nobody outside of McGregor’s circle has given the two-division UFC champion a chance against one of the best boxers of all time. Although in typical McGregor fashion, he has boasted that he will shock the world by stopping Mayweather.

As reported by FOX Sports, UFC president Dana White has publicly said that he doesn’t see how the fight between Conor McGregor and Floyd Mayweather doesn’t happen with the amount of money involved. And with the new UFC owners desperate to make up for the $4.2 billion price tag they had to pay for the company, there could be some truth to Bob Arum’s comments.