UFC President Dana White has made one thing clear - he will never take part in another working relationship with Showtime.

White's company came together with Showtime last year, to promote the anticipated pay-per-view fight between former five division world champion Floyd Mayweather and UFC superstar Conor McGregor - which took place last August at T-Mobile Arena in Las Vegas. 

According to a press release from Showtime in December, the pay-per-view generated generated 4.3 million buys in North America - officially making it the second largest pay-per-view event of all time behind Mayweather vs. Pacquiao, which set the North American pay-per-view mark at 4.6 million buys in 2015.

White - with the full backing of the UFC's parent company - is now planning to enter the boxing market and stage events in 2018.

The UFC executive is claiming that Showtime, for whatever reason, is underplaying the buy figures of the Mayweather-McGregor card.

The theory - from the White point of view - is Showtime is straying away from a scenario where a UFC fighter stepped in the ring for his first boxing match and that match broke boxing's biggest pay-per-view buyrate record.

Or maybe he believes they are undercutting the obligation of what needs to be paid to his side.

Showtime is owned by a publicly traded company, so that kind of allegation by White would mean there are federal crimes being committed - which is unlikely with the numerous regulators who audit the financial figures to ensure proper information for the stock owners.

He believes the fight certainly surpassed the Mayweather-Pacquiao buy figures - an event that saw the distribution handled by a rare partnership between Showtime and HBO.

"Think about this, and I don't give a sh*t about Showtime's f***ing, full of sh*t press release that they put out - it's the biggest fight ever, ever in combat sports history. The thing did over 6.7 million buys [worldwide] and if the service didn't drop, we would have gotten closer to 7 million. It was the biggest event ever. It was the biggest boxing event ever without a boxer, there was only one boxer in that fight," White told Kevin Iole of Yahoo Sports.

Showtime's press release was specifically geared towards the buy figures in North America.

"Which I still question," said White.

"The way that they handled that press release and what they did - I didn't trust them before and now I just despise those f***ing guys. The Showtime guys, I will never work with them again - ever."