Would be totally pointless. Froch is 35. Another 6 months of promotion and training wasted at this stage of his career would be daft, to rematch an opponent he beat with ease. Be like Pacquiao rematching Hatton in Manchester. The fight would be over as soon as Froch lands anything of note. Bute couldn't deal with Froch's power. That won't change regardless of which country they fight in.