The Tune Squad is gonna need a coach ... and who better than LeBron James' coach in real life -- Luke Walton -- to lead the Looney Tunes to victory in the "Space Jam" sequel?!
TMZ Sports asked the Lakers coach if he's down to star alongside LBJ in the highly-anticipated follow-up to the 1996 classic starring Michael Jordan ... and L.W. says he's IN!!!
... as long as LeBron wants him.
It seems like a perfect fit -- after all, the dude had a cameo on "The Young and the Restless" in 2006 .