I think LeBron will be do what he did the last time he was in Cleveland, and a little bit in Miami.
Have the team pay for the now with the future. Refuse to commit long term, making it tougher to get guys to commit there. Leave team with little future and no flexibility (but worth it because he delivered a championship).
I think he will go elsewhere in a year or two, and the question is what team can help him win.
In the East, he will have the easier road, but would he go to Boston or Philly.
In the West, I suppose he could pull a Durant and go to the team that just eliminated him from the championship run, but I really don't see any other team except LA.
I would really prefer if there was a greater migration of stars going East, not Eastern stars coming West.