Amir Khan
Khan undecided on next opponent.GettyImages

Manny Pacquiao, Floyd Mayweather Jr, Juan Manuel Marquez, Adrien Broner and Devon Alexander are all in Amir Khan's thinking as he considers his next opponent.

The 27-year-old listed the five fighters on Twitter as he asked fans who he should square up against in his next fight which is likely to take place in November or December this year.

A meeting with the five weight world champion Mayweather has been speculated upon for much of this year but after the unbeaten welterweight selected Marcos Madiana over Khan in early May a meeting this year between the two seems unlikely.

Mayweather has already announced the date of his second fight of the year to take place on 13 September, a fight Khan would not be ready for due to his Ramadan commitments. With the veteran very unlikely to budge on his finalised fight date, it would appear a showdown between him and Khan will have to wait 2015.

A clash between 27-year-old Khan and 35-year-old Pacquiao is another seemingly unlikely prospect. The Filipino will fight in Macau in November against an unnamed opponent, but comments made by his trainer Freddy Roach suggest it will not be Khan.

"If you're going to cross over, cross over and get me something exciting," Roach, a former trainer of Khan, told the Sweet Science.

"Someone who is going to make a good fight, that's what Manny wants. He (Khan) throws combinations and holds now, it is so boring. It is smart but not fun to watch. I don't want to stink the place out. Danny Garcia wouldn't do that, Garcia would fight back."

Marquez would appear to be another unlikely candidate to face the Brit with the Mexican looking for a world title fight, with a fifth meeting with Pacquiao a strong possibility in November. Devon Alexander meanwhile has previously stated he would be willing to fight the Bolton-born fighter despite his decision to shelve a proposed bout between the two last December, but whether Khan would be willing to settle for a match with the American at this stage remains to be seen.

Adrien Broner meanwhile is another uncertain option. Floyd Mayweather had previously proposed the idea of an eliminator between Khan and Broner on the undercard of his Las Vegas meeting with Maidana, an idea rejected by both fighters.

24-year-old Broner, who was suspended by the World Boxing Council for his racially insensitive comments following his win over Carlos Molina on the same card, has yet to discuss his next opponent.

But following a first career loss to Maidana last December, Broner has shown little interest in stepping in the ring with Khan.