Conor McGregor
File photo of UFC legend Conor McGregor Reuters

Ultimate Fighting Championship (UFC) president Dana White says lightweight champion Conor McGregor is 100% positive about winning his hugely-anticipated boxing match against undefeated boxer Floyd Mayweather in August this year.

McGregor and Mayweather have finally made it official that the two will be taking to the ring for a junior middleweight boxing match in Las Vegas on 26 August. The latter, who has a professional boxing record of 49-0, took to Twitter to confirm the news, shortly after the UFC champion teased his fans with this message: "THE FIGHT IS ON".

White, notably, had played a key role in the negotiation between the two fighters' camps. The 47-year-old added that both parties were happy with the terms for the "most talked about fight on the planet".

"He [McGregor] is absolutely 100 percent positive that he wins this fight I stopped doubting Conor McGregor a long time ago," White told ESPN, as quoted by the MMA Fighting.

"The fans wanted to see this fight. It is the most talked about fight on the planet right now. And it will be the biggest fight ever in the history of two people punching each other. The negotiations with Floyd were great. Everything went smooth with Conor. It went a lot easier than I thought it would go and everybody is walking away from this thing happy."

Speculations were rife about the possible crossover fight ever since McGregor hinted about his willingness to make the fight happen during his talk show with Conan O'Brien in 2015.

Meanwhile, Mayweather had said was willing to come out of retirement and take on the UFC champion only if he will be paid $100m. Notably, the boxing legend last defeated Andre Berto in September 2015 to end his 16-year-old career with an unbeaten record.

On the other hand, McGregor, who had a dream year in 2016 - which saw him win titles in two different UFC divisions, was persistent about settling the revenue issues and getting the fight against Mayweather happen in 2017. The Dubliner has also said that he is ready to shock the boxing legend, who is "petrified" to even see him.

Also, McGregor fuelled long-standing speculations when he obtained a professional boxing license in the state of California in November, last year.