There's a reason why Magic doesn't consider any of the young Lakers players as untradeable, and that's because their not going to be great players. The only asset of value they have is Brandon Ingram, and he is probably another 3 or so years away from contributing to a playoff caliber team. Depending on how the ping pong balls fall, the Lakers may or may not have a lottery pick this year.
Maybe I missed it, but other than Shaq in 1996, what other in their prime free agents have signed with the Lakers? I can only think of some bench players and end-of-their-career ring chasers.