I don't think Owen would produce much on Chelsea, he lost his pace and strength he once had and wouldn't compete with Drogba/Anelka.
Sorry to burst your bubble but Chelsea is going for the treble .
Drogba and Carlo will have a very strong relationship together, Didier respects the kind of coaches that care for their players and Carlo has already stated that he wants DD on his team next year. I also heard that he has a strong desire to coach the Ivory Coast squad in the future.
The problem with Scolari was his laid back attitude and antics towards the team/game, Ancelotti takes his football seriously and he makes sure every single player in the team is on the same page. I think he'll do great next season.
I read somewhere saying he want's to play first team football, good luck with that Ross. Cech won't be going anywhere for a while. If he doesn't mind playing behind him, than he would be a good young backup for the future.