Amir Khan during a press conference. Reuters/Andrew Couldridge

The Floyd Mayweather Jr.-Andre Berto matchup is set in September, but many boxing fans are disappointed with the pairing. British fighter Amir Khan is one of the disappointed critics, saying he felt slighted for yet another snub from the undefeated American.

"I'm disappointed not to have got the fight for what is the third time after having been one of the front-runners. However, there are many big fights out there for me and I'm going to continue working hard to establish myself at the top of the welterweight division,” Khan told Fight Hype.

When snubbed by Mayweather in previous years, the British pro was more active in criticizing the American, but this time he showed respect for Mayweather’s decision to choose Berto for what could be the former’s final bout of his career.

“Floyd Mayweather has fought the biggest names throughout his career and has earned the right to face whoever he chooses. I wish my stablemate Andre Berto and trainer Virgil Hunter the very best of luck in the fight. I have seen how hard Andre trains and works and know that he is ready to give Floyd a very tough night,” Khan added.

The Mayweather-Berto bout, which will be held at the MGM Grand Arena in Las Vegas, will reportedly cost $75 for pay-per-view subscribers.

Mayweather, the No. 1 pound-for-pound boxer in the world, is undefeated in 48 fights with 26 knockouts, while Berto holds a win-loss record of 30-3 with 23 knockouts.