Floyd Mayweather Jr. says he's ready to fight Manny Pacquiao next May in a long anticipated bout that would be the richest ever in boxing.

Mayweather called for negotiations for the fight to be take place, though he warned Pacquiao not to expect to get anywhere near the money that he himself would make.

"You lost twice and now you're coming back begging for the same money?" Mayweather asked. "That's not gonna happen."

In an interview on the Showtime network from a fight card he was promoting in San Antonio, Mayweather for the first time called for the fight to happen and even gave a date -- May 2. He claimed it wasn't him but Pacquiao's promoter, Bob Arum, who has been the main obstacle for not making the fight in the last five years.

"Floyd Mayweather is not ducking or dodging any opponent," Mayweather said. "Bob Arum is stopping the fight. We have been trying to make this fight happen for many years behind the scene."

Pacquiao turned the pressure up on Mayweather to make the fight last month, saying the time had come to put on the much anticipated bout. Arum said he had also been in talks with CBS Corp. chairman Les Moonves about the fight.