James Worthy -- Andrew Bynum Could Be a Laker Again ... If He Grows Up

NBA legend James Worthy says if Andrew Bynum ever wants to don the purple and gold again (or any team's colors for that matter) ... he's gonna have to stop acting like a 7 ft. tall baby.

Big Game James was leaving Mr. Chow in Beverly Hills ... when we asked him what he thinks the future holds for the unemployed center -- who was cut by the Cavs this week.

James says it's possible Bynum gets signed somewhere -- maybe even back with the Lake Show -- but he admits AB "hasn't really shown a lot of progress" and doesn't seem to have his head in the game anymore.