at the starwars website Lucas stated he gave Disney the other story lines to go back and they have absolutely nothing to do with the EU.
So George Lucas lied yet again.... He had stated that Episodes I - VI were his story. No more, no less. I have never seen a creator retcon himself as much as George Lucas. He's lied and backpedalled so often, I don't know what any of us can believe out of his mouth, anymore.