Amir Khan has expressed his frustration after missing out on a fight with WBC welterweight world champion Floyd Mayweather.

Promoters Golden Boy and Mayweather Promotions announced on Monday night that undefeated pound-for-pound king Mayweather will fight WBA champion Marcos Maidana on May 3, ending a long period of speculation over who boxing's biggest draw would take on next.

The American even asked fans to vote on whether he should face Khan or Maidana next on social media, despite the fact Khan had already signed a contract putting him in line for the fight.

And now Bolton fighter Khan, who has not fought since suffering a scare in a victory against Julio Diaz in Sheffield last April, has revealed his disappointment with the way Mayweather's camp has handled the protracted process.

"Following the announcement by Floyd Mayweather that he will be facing Marcos Maidana on May 3rd I would like to clarify my situation for my fans and members of the media," read a statement from Khan.

"Despite having signed my part of the agreement to fight Floyd in early December, I've been preparing myself for some time that the match-up with him wasn't going to happen, as I announced on Twitter a few days ago. Therefore, this announcement did not come as a surprise.

"I am, however, very disappointed with Floyd and his team for not providing any explanation as to why he delayed the announcement for so long and ultimately avoided the fight with me.

"Clarification, if he was not fighting me, would have allowed me to look over my options and pursue another path, rather than the ultimate delay to my career this has caused.

"It has been a very frustrating period as I'd been due to fight in December against Devon Alexander, however, I was strongly advised to not take this fight as I would be facing Floyd this May - and therefore signed my side of the contract on this belief.

"Floyd was keen to engage with the fans and so decided to let them choose who he should fight in his next bout. I clearly won his official poll, by a significant margin, but for unknown reasons he decided to ignore the fans' vote and failed to keep his word, disappointing many fight fans who took the time to vote.

"I genuinely wish Marcos and Floyd all the best for their fight - two great fighters."

Khan has been rebuilding his career with back-to-back wins over Carlos Molina and Diaz after his loss to Danny Garcia in July 2012 and is now hoping to announce his next opponent within the next 10 days.

"As a team we have now moved on and are looking at different options," he said.

"I've been training very hard since my last fight. I'm a fighter who wants to face the very best out there and have never ducked any opponent.

"I'm focused and ready for my next outing - we currently have a few options on the table at the moment and my team are working alongside Golden Boy Promotions to announce my next fight within the next 10 days.

"I can't wait to get back in the ring and am determined to put on a great show for my loyal fans who have waited a long time to see me back in action - and I'm very excited about what's yet to come this year. Thank you for all your continued support."