Boxing superstars "Pretty Boy" Floyd "Money" Mayweather Jr. and Manny "Pacman" Pacquiao reportedly have agreed to face each other in September.

As reported by the Latino Post, a reliable source approached 78SportsTV and reported that the long-due boxing showdown between the two biggest names in the sport is a done deal and will take place in September of 2014.

As reported by the Philippine Star, The source, who previously leaked the information about Mayweather's upcoming showdown with Robert Guerrero and Saul Canelo Alvarez months before those fights were announced, said that Manny Pacquiao and Floyd Mayweather have already set everything up for their highly anticipated mega-fight.

"Great news in the world of boxing. He [the source] is telling me that Floyd and Manny Pacquiao will be fighting in 2014 guaranteed and it's already done," the 78Sports anchor said.

The development comes amid various reports about Mayweather's purported disinterest in a fight with Pacquiao, which most observers believe could break existing pay-per-view records and end up as the richest bout ever.

Mayweather recently came up with a series of online posts mocking Pacquiao and hinting that a megabuck bout between them is far from happening. Meanwhile, Pacquiao is reportedly flying to the US to personally talk to Mayweather about a fight.

Two weeks ago, Mayweather stressed that a fight with Pacquiao is unlikely right now because Pacquiao is currently signed with Bob Arum's Top-Rank. However, there are reports that Pacman is considering representing himself as a free-agent in his fight with Mayweather in an attempt to get the job done.

But 78SportsTV's source insists that everything is just for show.

"Everything else that you will see will be just theatrics from here on out. But the fight is already done," he added.

Pacquiao and Mayweather have scheduled their ring return in April and May, respectively, although no opponents have been named yet. The undefeated American is reportedly eyeing British Amir Khan while Pacquiao has Juan Manuel Marquez, Timothy Bradley and Ruslan Provodnikov in his radar.

Those fights will logically end up as preludes to a highly anticipated Mayweather-Pacquiao mega-fight.Years ago both camps tried to arrange the duel, with Mayweather insisting on an Olympic-style blood testing and at one point offering Pacquiao a flat fee of $40 million to face him. However talks between the two camps broke down and the fight never came to be.