If I was him, I'd hedge my bets, and it all depends what division we are in!
If we retain our PL place, then sign a lucrative new contract with us, as Leeds wont be in the PL next season.
Then go out on a season-long loan. And we demand the same as Chelsea did with Tammy. He HAS to play a fixed % of games, when fit, by the January window, or he comes back, and we either keep him, or send him somewhere else, where he is guaranteed game time.
And if that is Leeds, then he gets the best of both worlds.