floyd mayweather held media workout at his gym - but turned up late .
he is just over two weeks away from facing manny pacquiao on may 2 .
mayweather will earn more than $ 180m from the richest fight in boxing .
but he admitted he no longer enjoys the sport and will retire this year .
mayweather plans to have one more fight in september to finish his career .
ricky hatton : pacquiao has style but mayweather ` will find a way to win '
click here to watch manny pacquiao 's open media workout live .