After bringing his career record to 48-0, Floyd Mayweather Jr. said he is set to retire after his last match this coming September.

On Saturday, he was able to prove to his opponent, 8-division champion Manny Pacquiao and to the entire world why he remains to be undefeated.

The Los Angeles Times said his most probable opponent left the MGM Grand Arena on Saturday full of hope that he will be given the chance to fight with the undefeated fighter for his last match.

English professional boxer Amir Khan was seen among the audience during the Mayweather-Pacquiao fight observing every move of the fighters. But before he can seal a deal with Mayweather's camp, the Los Angeles Times said he should first beat Chris Algieri during their upcoming fight this month. Pacquiao previously defeated Algieri last November in Macau.

Mayweather is reportedly a favorite over Khan and he is predicted to remain undefeated until the end of his career.

Asked about the next match of his son, Mayweather Sr. said in a Yahoo Sports report that there isn't any challengers for them. "You look at the ratings and stuff, you don't see no challengers out there. I don't see any challengers out there," he added.

Since Mayweather's camp did not reveal any potential opponents, here are some fighters who can give "The Money" a great fight in September.

Amir Khan

First on the list is Amir Khan as he told the Telegraph that he was asked to fight Mayweather. "I'm in a position where I could face either but I want Mayweather. I think Mayweather's team want the fight," Khan said, noting that he was approached by Mayweather's manager Leonard Ellerbe after the Las Vegas bout telling him to "get it on."

Yahoo Sports, however, said that Khan should be careful as he has already experienced bad losses in his career.

Kell Brook

If it will not be Khan, then it would be another British boxer for Mayweather in the person of Kell Brook. Telegraph said Brook is also the holder of the only world welterweight title that Mayweather does not yet have - the International Boxing Federation belt.

Promoter Eddie Hearn, on the other hand, said that the American boxer's camp will not go for either Brook or Khan. "But he has just earned a massive amount of money and Khan and Brook are nowhere near big enough fights. There's still no bigger fight out there for Mayweather than another one with Pacquiao," Hearn added, as quoted by the Telegraph.

Miguel Cotto

Cotto is another good fighter to take on Mayweather as he was able to get the WBC middleweight belt from Sergio Martinez last June 2014. In 2012, Mayweather already defeated Cotto but Yahoo Sports said it was an entertaining fight so might as well give it another shot.

Other potential fighters to go against Mayweather are undefeated young fighter Keith Thurman and WBA and WBC junior welterweight champion Danny Garcia.