fight against sergio for floyd makes the most sense. he will get more credit in beating sergio at CW of 156 than beating pac at 147. he won't lose as much, legacywise, if he loses to sergio than against pac. for floyd, there's more at stake against pac rather than sergio.
if he wants a challenge Khan If he wants to face a guy that will be almost even money and his biggest risk to lose against - Martinez If he wants an easy win - cotto (if he beats Margo) If he wants an easy win - Berto If he wants to cement his Legacy - Pac i hope its anyone but cotto and berto....
Khan isn't a challenge. He would be another cherry-picked opponent with a slim chance at beating Floyd. Another easy fight for Floyd. Anyone other than Manny or Sergio is bull**** that deserves to fail at the box office.