I don't really understand the world of professional boxing and how they organise fights so forgive me if this is a dumb question. There are four Welterweight World Champions - Mayweather, Maidana, Porter and Bradley. Khan has been trying to get a fight with Mayweather. Mayweather is now fighting Maidana. Mayweather has said he will fight Khan if Khan beats Broner on an undercard at his Maidana fight. Khan presumably won't do this. Bradley is fighting Pacquiao next month. That leaves Porter who as far as I can tell doesn't have any fights lined up. Why isn't anyone talking about Khan fighting Porter?