Where will Jean-Guillaume go next?

Now that its owner has announced that Jean-Guillaume Prats, the public face of Château Cos d'Estournel, the leading St-Estèphe property, is to leave Cos early next year, has anyone any thoughts on what would/could be the ideal job for him?

It's difficult to think of where one would go after running a super-second château in Bordeaux with apparently limitless means at one's disposal. And a rich owner, Michel Reybier of Switzerland, breathing down one's neck.

He certainly has wine in his veins, and has been passionately attached to Cos and its reputation. I remember being at dinner once at his...