I don't think Lebron leaves the Lakers, but if he does it will be to a team that will be a real title contender, which Orlando is not. A team like the Warriors or Cavs.
I do think the Lakers should trade Davis though (whenever they can). The Thunder make a lot of sense. Something like Dort, Giddy, and a bunch of 1st's. Lakers have cap space to sign someone and then the picks from Thunder to pair with expiring contracts to trade for a 3rd star.