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(Video courtesy of TMZSports | Viewing may be limited by broadcast rights restrictions) Shortly after Floyd Mayweather disposed of Conor McGregor in a 10-round boxing match, he teased the idea that he might jump into the Octagon to make a quick billion dollars by either rematching McGregor in a mixed martial arts bout. After all, McGregor came to his world for the a record-setting, money-maker of a bout, shouldn't he return the favor? Then, of course, McGregor retuned to the Octagon, where he was submitted by UFC lightweight champion Khabib Nurmagomedov.  Mayweather shifted his focus to Nurmagomedov for a brief time, but just when things started to heat up, he walked away for a much easier payday in a boxing exhibition in Japan. TRENDING  Francis Ngannou Video: ‘I Learned a Lot from Last Year’ It appears that the quick bucks of the boxing world are free flowing for Mayweather, and he's no longer enticed by the idea of a mega payday in the Octagon.