Golden Boy Promotions CEO Oscar De La Hoya has been a firm critic of last month's crossover bout between five division champion Floyd Mayweather Jr. and UFC superstar Conor McGregor.

Mayweather, at 40 years old, returned to the ring after two in retirement to stop McGregor in the tenth round at the T-Mobile Arena in Las Vegas.

De La Hoya watched the fight and believes he contest was a "scam" and a "farce." He says the contest was a fraud to the public, because Mayweather - one of the best boxers in the history of the sport - was facing an MMA fighter who was making his professional debut as a boxer.

The fight was a huge financial success. At the moment it threatens the pay-per-view buyrate record of 4.6 million, that was set by Mayweather's fight with Manny Pacquiao in 2015. Some estimate that Mayweather-McGregor may bring in as much as $700 million in revenue when everything is said and done.

Would De La Hoya have a different position on the contest if Golden Boy was presented with the opportunity to promote the fight?

The position would be the same, because De La Hoya would reject the proposal. He wants nothing to do with a boxer facing an MMA fighter.

"[I wouldn't promote it] because boxing is a sport that I have much respect for. Boxing gave me everything I have. I've been boxing since I was four years old.... it gave me a gold medal, ten world titles in six different weight class.. I'm going to defend my sport of boxing forever," De La Hoya told CNN.

"For me it's not really about making the money. Yes, it's great to make the money, but its not about the money... its about history, its about legacy, its about winning fights and giving the fight fans what they deserve and they deserve real fights.

"Its not fair to the fans [to do a fight like that]. I strongly believe that I will not be involved in a promoting a fight with an MMA fighter and a boxer. Both sports are beautiful, both sports are respectful. I will not have anything to do with a boxer fighting an MMA fighter any time soon."

De La Hoya says his position on a Boxing vs. MMA bout has nothing to do with the sport's rivalry with the UFC.

"No, not at all. Most of the revenue went to Mayweather and he's a boxer. Boxing obviously won. The UFC won. Everybody won. I just feel the sport of boxing is a pure sport and the UFC is a pure sport. They are two different sports and they should stay that way," De La Hoya said.