Floyd Mayweather has insisted that only a "nine-figure" payday will tempt him out of retirement.
The 39-year-old quit boxing in September after accumulating a 49-0 record during a 19-year career that produced world titles in five weight divisions and earnings in excess of $800 (£548) million.
The American says he is happy with life outside the ring but acknowledged he was in talks with television networks over a possible comeback fight.
"Everyone is asking me 'is Floyd Mayweather coming back?'" he said in an interview with Showtime.
"Right now, I'm happy on this side, but I've been talking and you just never know. But for now, I'm happy on this side.
"If I came back, of course, it would have to be a nine-figure payday and probably a championship fight," he added.
Mayweather beat Manny Pacquiao, who retired last month, in a unanimous decision last year before defeating Andre Berto in September in his last bout.
Many want him to take on undefeated Kazakh middleweight champion Gennady Golovkin but Mayweather was quick to rule out the possibility of agreeing to that match-up.
"How can Floyd Mayweather fight at 160 (pounds) when I can never even make 154?" he said.
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