You can bet your house that Mayweather will be back to break Marciano's record. This whole "retirement" angle was just a way to trick people into paying to watch him fight a tomato can.
Hell Spider, every fight he has is a trick to get people to pay to watch his boring fights against tomato cans. I cannot for the life of me understand how people pay "over and over" for his fights. Boxing needs a complete overhaul, rule system like other sports, and one sanctioning body. Fighters like mayweather should be required to fight real contenders instead of cherry picking opponents and pocketing a fortune of a lifetime.