Floyd Mayweather thinks it's RIDICULOUS that the allegations against Antonio Brown are keeping him out of the NFL ... and he put the league on blast during a video chat with AB.
"They need to let you play in the NFL man. they need to stop worrying about what you do on the outside."
"You can get arrested 40 times, 50 times," Mayweather told AB on Friday ... "Do that got something to do with you catching the ball or what you doing on the field?"
Of course, the allegations against Brown are very serious -- he's been accused of violent rape and he was arrested back in January for attacking a moving truck driver.