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Floyd Mayweather Snr. hopes his son decides to hang up his gloves after his superfight against Manny Pacquiao.

Long-time rivals Mayweather Jr and Pacquiao will finally touch gloves at the MGM Grand Garden Arena in Las Vegas on May 2 in what is widely expected to be the richest fight in boxing history.

While Mayweather Snr. believes his son will have no problem extending his unbeaten streak against the Filipino, he called for it to be his last fight - a statement which may not go down well with Britain's Amir Khan.

"I hope that Floyd gets out the game at the right time," Mayweather Snr. told the Sunday Telegraph.

"This is a gambler's game and I don't think Floyd should be gambling too much. Once you reach that pedigree and make that kind of money, you don't have to fight no more.

"I hope he walks away after this fight. Whenever you get in that ring, anything can happen. It looks easy but it ain't as easy as it looks. He makes it look easy."

Mayweather Jr. is looking to make it 48 victories from 48 professional fights and will face a tough challenge in eight-division champion Pacquiao, but his father doesn't see it at last.

He added: "This era is closed. It's done. Pacquiao is done. He needs to be locked up in jail because it's time to save his a--. Pacquiao needs to lock himself up.

"He is not on Floyd's level. All he is, is an opponent. That's all he is. Nothing more, nothing less."