Soulja Boy has parted ways with Floyd Mayweather.

SB had already expressed dissatisfaction with Money's promoting of his upcoming fight with Chris Brown, and now the undefeated champ is also out as Soulja's trainer.

Instead Soulja is being trained by Evander Holyfield, who has told SB to "train harder and talk less."

Chris Brown is still being trained by Mike Tyson -- so there's a none-zero chance of cannibalistic shenanigans at the weigh in.

Soulja sources tell TMZ that there are not hard feeling between him and Floyd, he just felt Money wasn't committed enough to the fight with everything else he has going on.

Social media savvy Blood Wack 100 claims he's now promoting the fight, which we don't have a date for it yet.

SB's recent arrest on weapons charges surely complicates things. Especially since there was talk of the fight going down overseas.