Mayweather, who has been the best-paid athlete in the world for several years, has gone no match since knocking MMA star Conor McGregor in Las Vegas 2017.
Now he might be heading back into the boxing world's limelight - as a coach.
- After my uncle Roger recently passed away, I felt inspired to help those around me in the same way he was there for me during my career. I've had some incredible trainers, including my father and uncle, writes Mayweather in social media.
Along with the post is a video clip in which he helps a 14-year-old relative to train on so-called "mittens", ie plates you turn on.
- In a time when we have to distance ourselves from others, I have had time to reflect on how I want to make a difference in people's lives and help them achieve their goals. This quarantine has made me realize the importance of cohesion and helping others grow, he continues.
His uncle Roger passed away on March 17, aged 58, after several years of health concerns.
Floyd Mayweather put the gloves on the shelf with a spotless fact of 50 wins and no losses.
Roger Mayweather, uncle and former coach of Floyd Mayweather Jr. Photo: TT