Manny Pacquiao has claimed he has no interest in the upcoming fight between Floyd Mayweather and Conor McGregor, and has warned fans it will be a “very boring” evening, as he angles for his own rematch with the undefeated American.

Pacquaio, 38, is currently preparing for his WBO welterweight championship fight against Jeff Horn, and took time out of his training camp to discuss the Las Vegas super fight.

The contest, which will be staged at the T-Mobile Arena in Las Vegas on August 26, looks set to become the most lucrative fight in the history of boxing, but Pacquaio has told fans that it will likely be a “boring” affair.

“McGregor has no chance in this fight. In fact, it could be very boring,” Pacquaio told Yahoo Sports.

“There is no way he will be able to land a meaningful punch on Floyd. How could he? He has no professional experience in boxing.

“The real fight and the best fight is [Gennady] Golovkin versus Canelo [Alvarez]. The best versus the best. That's the fight I will be watching.”

Pacquaio fought Mayweather himself in May 2015, in an eagerly awaited welterweight showdown that was dubbed ‘The Fight of the Century’ by critics.

Mayweather vs McGregor: From trash-talk to super-fight Show all 18 1 /18 Mayweather vs McGregor: From trash-talk to super-fight Mayweather vs McGregor: From trash-talk to super-fight 00-mayweather-mcgregor-trash-talk-timeline.jpg NEW YORK, NY - NOVEMBER 10: UFC Featherweight Champion Conor McGregor addresses the media during the UFC 205 press conference at The Theater at Madison Square Garden on November 10, 2016 in New York City. (Photo by Michael Reaves/Getty Images) Getty Images Mayweather vs McGregor: From trash-talk to super-fight 01-mayweather-mcgregor-trash-talk-timeline.jpg Mayweather vs McGregor: From trash-talk to super-fight 02-mayweather-mcgregor-trash-talk-timeline.jpg LAS VEGAS, NV - MAY 02: Floyd Mayweather Jr. reacts after the welterweight unification championship bout on May 2, 2015 at MGM Grand Garden Arena in Las Vegas, Nevada. (Photo by Al Bello/Getty Images) Getty Images Mayweather vs McGregor: From trash-talk to super-fight 03-mayweather-mcgregor-trash-talk-timeline.jpg Mayweather vs McGregor: From trash-talk to super-fight 04-mayweather-mcgregor-trash-talk-timeline.jpg Mayweather vs McGregor: From trash-talk to super-fight 05-mayweather-mcgregor-trash-talk-timeline.jpg Picture shows an arrangement of copies of The Sun newspaper front pages on February 13, 2012. Rupert Murdoch's British tabloid The Sun condemned police raids against its journalists as a "witch-hunt" worthy of former communist states, and won rare support from rival newspapers. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images) AFP/Getty Images Mayweather vs McGregor: From trash-talk to super-fight 06-mayweather-mcgregor-trash-talk-timeline.jpg LAS VEGAS, NV - AUGUST 20: Conor McGregor waits for the start of his welterweight rematch against Nate Diaz at the UFC 202 event at T-Mobile Arena on August 20, 2016 in Las Vegas, Nevada. McGregor won by majority decision. (Photo by Steve Marcus/Getty Images) Getty Images Mayweather vs McGregor: From trash-talk to super-fight 07-mayweather-mcgregor-trash-talk-timeline.jpg LAS VEGAS, NV - SEPTEMBER 13: Floyd Mayweather Jr. looks on while taking on Marcos Maidana during their WBC/WBA welterweight title fight at the MGM Grand Garden Arena on September 13, 2014 in Las Vegas, Nevada. (Photo by Al Bello/Getty Images) Getty Images Mayweather vs McGregor: From trash-talk to super-fight 08-mayweather-mcgregor-trash-talk-timeline.jpg LAS VEGAS, NV - JUNE 02: Mayweather Promotions CEO Leonard Ellerbe introduces honoree Floyd Mayweather Jr. during the 2017 Southern Nevada Sports Hall of Fame induction ceremony at the Orleans Arena on June 2, 2017 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images) Getty Images Mayweather vs McGregor: From trash-talk to super-fight 09-mayweather-mcgregor-trash-talk-timeline.jpg TORRENCE, CA - FEBRUARY 24: UFC featherweight champion Conor McGregor speaks during an interview after a news conference with lightweight contender Nate Diaz at UFC Gym February 24, 2016, in Torrance, California. (Photo by Kevork Djansezian/Getty Images) Getty Images Mayweather vs McGregor: From trash-talk to super-fight 10-mayweather-mcgregor-trash-talk-timeline.jpg LAS VEGAS, NV - MAY 02: Floyd Mayweather Jr. throws a left at Manny Pacquiao during their welterweight unification championship bout on May 2, 2015 at MGM Grand Garden Arena in Las Vegas, Nevada. (Photo by Al Bello/Getty Images) Getty Images Mayweather vs McGregor: From trash-talk to super-fight 11-mayweather-mcgregor-trash-talk-timeline.jpg LAS VEGAS, NV - MAY 02: Floyd Mayweather Jr. looks on during the welterweight unification championship bout against Manny Pacquiao on May 2, 2015 at MGM Grand Garden Arena in Las Vegas, Nevada. (Photo by Al Bello/Getty Images) Getty Images Mayweather vs McGregor: From trash-talk to super-fight 12-mayweather-mcgregor-trash-talk-timeline.jpg Mayweather vs McGregor: From trash-talk to super-fight 13-mayweather-mcgregor-trash-talk-timeline.jpg Mayweather vs McGregor: From trash-talk to super-fight 14-mayweather-mcgregor-trash-talk-timeline.jpg NEW YORK, NY - MARCH 17: (L to R) Conor McGregor, & Michael Conlan celebrate Conlan's 3rd round TKO win over Tim Ibarra in his super bantamweight bout at The Theater at Madison Square Garden on March 17, 2017 in New York City. (Photo by Ed Mulholland/Getty Images) Getty Images Mayweather vs McGregor: From trash-talk to super-fight 15-mayweather-mcgregor-trash-talk-timeline.jpg NEW YORK, NY - NOVEMBER 10: UFC Featherweight Champion Conor McGregor addresses the media during the UFC 205 press conference at The Theater at Madison Square Garden on November 10, 2016 in New York City. (Photo by Michael Reaves/Getty Images) Getty Images Mayweather vs McGregor: From trash-talk to super-fight 16-mayweather-mcgregor-trash-talk-timeline.jpg Mayweather vs McGregor: From trash-talk to super-fight 17-mayweather-mcgregor-trash-talk-timeline.jpg LAS VEGAS - MAY 23: Musician Musician Keith Urban performs onstage during the 41st Annual Academy Of Country Music Awards held at the MGM Grand Garden Arena on May 23, 2006 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images) Getty Images

However, the fight ultimately proved to be a disappointment, with Mayweather adopting extremely defensive tactics and Pacquiao struggling to land a punch on the American. Mayweather won via a 12-round unanimous decision, with the contest being relabelled as ‘Better Never than Late’.

Pacquiao, an 11-time world champion, has beaten Timothy Bradley and Jessie Vargas since that defeat and hopes that a victory over Horn could lead to a lucrative rematch with Mayweather.

Mayweather v McGregor: Tale of the tape

“If there's a chance, why not? I'm willing,” Pacquiao said of a potential rematch with Mayweather.

“But let's focus first for this fight. We don't want to underestimate ... Horn, thinking about another fight. This fight is not done yet.

“I know my body. I'm ready. I'm not underestimating (Horn). I'm not taking him lightly. I'm working hard.”

Mayweather got the better of Pacquaio in the 'Fight of the Century' (Getty)

“Manny is in a must-win situation. He wants a rematch with Mayweather,” added his long-term trainer Freddie Roach.

“With Mayweather you have to look good against an opponent, you have to be impressive.”

Many have criticised Mayweather for taking the McGregor fight (Getty)

Roach also admitted that Pacquaio’s career could be brought to a premature end if he suffers a shock defeat to Horn, a 29-year-old with a professional record of 16-0-1.

“If he struggles in this fight, it could be over,” Roach said. “And depending on how he lost, I would probably encourage him to retire.