The 35-year-old took his unbeaten record to 43-0 at the MGM Grand last night, securing the WBA Super World light-middleweight title in the process.
Mayweather used to post-fight interview call out his Filipino rival, urging him to agree to a bout.
"I tried to make the Pacquiao fight and that didn't work, so I fought Miguel Cotto instead and gave the fans a great fight," said Mayweather. "I want to fight Pacquiao but he has to take the test, and I'll fight him."
Mayweather will start a 90-day prison sentence for assault on June 1.