Bill Laimbeer wants to hand Michael Jordan one more "L" ... 'cause the NBA legend says LeBron James is the greatest of all time "every day of the week!!!"
Bill knows what it's like to beat MJ -- the "Bad Boys" Detroit Pistons defeated the Chicago Bulls on their way to back-to-back titles in 1989 and 1990 ... and he had his fair share of tense moments with Jordan.
But, Laimbeer ain't saying this because he's still got a grudge against MJ ... telling Fox Sports Radio's "The Odd Couple" his reasoning behind his choice.