Floyd Mayweather is ready to make his superfight against Conor McGregor official. Mayweather's latest declaration is that he's waiting on McGregor to put pen to paper. "Sign the paper. You said you're a boss. Just sign the paper and let's make it happen." The two sides must agree to terms first. Mayweather and McGregor have been at odds over how the purse should be split. McGregor would also need to have UFC sign off on the bout.