By Lou Aguila (staff@latinospost.com) | First Posted: Jul 01, 2013 02:39 AM EDT

Britain's Amir Khan isn't giving up easily in his pursuit to fight pound-for-pound champion Floyd Mayweather Jr., saying he's guaranteed to face the undefeated American boxer next if he would be able to beat IBF welterweight titlist Devon Alexander later this year.

In an interview with Kugan Cassius of I Film London, Khan said he believes a fight against Mayweather is inevitable and it could happen sooner than expected if he can defeat another pound-for-pound fighter in Alexander.

"If I win my next fight [in December], it's Floyd Mayweather fight. I've been guaranteed that. I've got one more obstacle to pass against Alexander and I'll get Mayweather fight," said Khan, who's coming off victories against Carlos Molina (10th round TKO) and Julio Diaz (Unanimous decision).

Although nothing is final yet, the Khan-Alexander showdown could happen in December under Golden Boy Promotions with the winner of the bout having a chance to earn big money against Mayweather.

But several analysts, including Scott Gilfoid of Boxingnews 24, thinks the Khan-Mayweather fight would never happen even if the Briton managed to beat Alexander in December. He believes the track record of Khan, a loser of two of his four fights, could affect his chances of securing a fight with Mayweather. Gilfoid said Khan's so-so boxing slate (28 wins and 3 losses with 19 KOs) might give a negative impression to pay-per-view buyers that the Briton fighter is another product of dubious matchmaking.

Setting the mediocre record aside, Gilfoid believes Khan-Mayweather is a more decent fight than last May's Mayweather-Guerrero bout because of the Briton's ability to match the speed and quickness of the American boxer.

Mayweather will fight Saul Canelo Alvarez in a light middleweight showdown on September 14 at MGM Grand Garden in Las Vegas, Nevada.

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