Wanna see Jose Canseco beat up Lindsey Lohan's dad?
Well, your wish may finally come true ... because the Bash Brother is signed on to fight Michael Lohan in a celebrity boxing match ... TMZ Sports has learned.
It's being hailed as the "Battle of the Hollywood Bad Boys" -- and fight promoter Damon Feldman of 16 Minuteman promotions tells us it's all going down in September at a venue in Los Angeles.
Feldman says the fight won't be a cakewalk for Canseco .