Floyd Mayweather Jnr has claimed that he will not lose sleep if he fails to go up against Manny Pacquiao before his retirement at the age of 37.

The American seven-time world title winner was originally due to face his Filipino rival on May 5 but negotiations over the proposed fight broke down, which caused the 35-year-old to set up a bout with Miguel Cotto.

"If it really was all about Pacquiao then I didn't have to fight all 42 opponents [I have faced so far]," said Mayweather. "All I had to do was come to the sport of boxing and fight one guy then I would have gone down as the best, just one guy. So I guess the 42 guys that I've faced didn't count.

"But I want to stay active, I want to fight again in 2012 before the year is up. I want to constantly go out there and test my skills and I want to continue to push myself to the limit. I still plan to retire at 37 but I want to fight plenty of times before then."

The WBC welterweight champion is currently unbeaten in his professional career.