Manny Pacquiao and Floyd Mayweather have been circling each other for the past five years now but the bout could actually happen next year with "Money" challenging the Filipino champ's camp to "make it happen."

When Amir Khan dominated Devon Alexander, he called out Floyd Mayweather claiming that he's next in line as he has proven himself twice.

But Floyd Mayweather claimed that Manny Pacquiao is the best name out there as his opponent.

"The other night I think he did 4,000 (attendance), so, Amir Khan, his name holds no weight," he said during the World Boxing Convention. "No one knows who Amir Khan is, except for people who are involved in boxing."

"My focus is Manny Pacquiao. Let's make it happen," he added.

In an earlier interview with Showtime, Floyd Mayweather called out Manny Pacquio to fight him on May 2 next year as part of his legacy when he steps down undefeated.

"I know that he's not on my level. The fans would love to see the fight, of course I wanna go out with a bang," he said.

Then Floyd Mayweather addressed the camera: "Manny Pacquaio, Bob Arum you guys have been ducking us for years. Before we tried to make the fight happen, you didn't want to take random blood and urine testing that's why the fight didn't happen.

"Then I offered you 40 million then you didn't want to make the fight happen. You lost twice now you're coming back begging for the same money, that's not going to happen," he said.

But Manny Pacquiao is certainly not backing down as he took to Twitter to write: "@FloydMayweather, don't be a boxing humbug. Let's give the fans the fight they want. They have waited long enough."

In another interview, Manny Pacquiao said of Floyd Mayweather: "He has nowhere to run but to fight me. I will try my best to make this a thrilling and entertaining fight, but I doubt if he's gonna engage me in a slugfest."