Amir Khan is still hoping that Floyd Mayweather Jr. will eventually decide to face him, but the British boxing icon expressed fear that his dream fight will not happen at all, BoxingScene reported on Wednesday.

Khan admitted that he feels that time is running out for him to secure a bout against Mayweather, especially now that there are talks about a possible rematch between Marcos Maidana and the reigning pound-for-pound king.

Khan quickly added, though, that he will not have any regrets because he did his best to get a shot at Mayweather, including winning convincingly in his last fight against Luis Collazo.

"I think time might be running out," Khan said. "You always fear a little bit that the fight may not happen, but then I think to myself that at least the world knows I wanted it to happen. It's a fight I really want and if it never happens I'll be upset because he is the best out there. If he's not ready or confident then the fight isn't going to happen. Even if the world says fight Amir Khan next, if he says 'no' then it won't happen."

Mayweather is coming off a majority decision win over Maidana in their action-packed showdown on May 3 at the MGM Grand in Las Vegas.

Khan was supposed to be Mayweather's opponent this May as he was considered as a heavy favorite to land the bout, but the unbeaten champion opted to face Maidana instead.

Khan feels that he could have inflicted more damage to Mayweather than Maidana did, saying that his fighting style is perfect to hand the 37-year-old champion the first defeat of his boxing career.

"I really do believe I have the style to beat him," Khan said. "I don't think he is scared of me but he has said he is scared of getting beaten and I think he sees something in my style which would cause him a lot of problems."