Logan Paul says KSI is pulling some shady crap when it comes to their rematch -- saying the YouTube star is breaking their contract by refusing to fight in February.
Remember, the two squared off back in August but fought to a draw in a crazy 6 round slug fest at Manchester Arena in the U.K.
The two had signed a contract requiring a rematch -- but the two sides can't seem to agree on a date.
On Wednesday, KSI posted a video pointing the finger at Logan's camp -- saying Team Paul was supposed to take the lead with planning since it's supposed to happen in the U.