MANILA, Philippines — Floyd Mayweather is taunting Manny Pacquiao to put his signature above the dotted line so the superfight many are drooling over finally happens in May 2012.

Mayweather said in his Twitter account that he is more than ready to square off with the Filipino star.

"May 5 is the date, sign the contract, I'm waiting," said the unbeaten 34-year-old Mayweather.

There have been a couple of times when negotiations broke down to stage a Pacquiao-Mayweather fight owing to random blood testing and revenue sharing but it seems that these are close to being ironed out.

"I can't be sitting waiting all day, you want to fight let's make it happen. I'm here, I'm waiting, what's going on? I can sign today. If I sign today you better sign tomorrow," he said.

Last week, Pacquiao told the local media in General Santos City that negotiations have started for a lucrative showdown with Mayweather.

Hall of Fame promoter Bob Arum of Top Rank said he is holding talks with investment groups and is keeping his fingers crossed over the outcome of the talks. These same groups are also in contact with Mayweather, according to the 79-year-old Arum.

Pacquiao is coming off a hard-earned 12-round majority decision over Mexican nemesis Juan Manuel Marquez and it is believed that his far-from-impressive showing might have something to do why Mayweather is making a noise.

Mayweather, on the other hand, last fought in mid-September, knocking out Victor Ortiz in six rounds.

It is expected that if the fight becomes a reality, it will surpass pay-per-view subscriptions and box-office sales as well.

But if talks go down the drain again, Pacquiao will likely meet Marquez for the fourth time.