Floyd Mayweather: Former Boxer Shares Photo of Himself at Louvre Pyramid on Trip to Paris

Floyd Mayweather (49–0) has been retired since September of 2015. Patrick Smith/Getty Images

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• Mayweather/Pacquiao Rematch: ‘More Likely Than Not’ Says Promoter Bob Arum

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• Watch: Floyd Mayweather Shows Off His Ridiculously Expensive Car Fleet and Watch on Night Out

The only conceivable fight that may interest Mayweather is a rematch with Pacquiao. Of course, the 37-year-old Pacquiao is retired himself. The clock is certainly ticking for both of them if they'd like to do another mega-bout—something most of us would like to see.