Quite possible. The only question is who is in the worse state? Could actually be quite intriguing and unpredictable. Doubt De La Hoya would want to fight at 147 again, and Hatton always whines about fighting at 147 heaven forbid anything above that. That is the only problem I'd say, but I doubt they'd let it get in the way of money.
Oscars only just retired. I don't think it would look good if he held another press conference next week to say he was fighting Hatton. So can't see that happening.