It all depends on what happens between now and then. If Mosley fights before then and looks old going into the fight, how Mayweather looks vs. Marquez, the weights the fights happen at, and if Manny won the nature of the fights. Too many variables to say, but if he did fight them and win, it would put him very high on the list given his accomplishments already and beating any version of Floyd or Mosley is a big win. He could easily be top 10 of all time if he accomplished this.