Jake Paul says Tyron Woodley training with "The Best Ever" could be the worst thing ever for the UFC star ... telling TMZ Sports it'll be a HUGE "disadvantage" for their fight this month.
Paul and Woodley are set to face-off in the ring in Cleveland on Aug 29 ... and "The Chosen One" has been in the gym with Floyd leading up to the bout -- something Paul believes he'll regret.
"I think it's a disadvantage for him, actually," Paul says.