There is no reason they shouldn't fight again assuming Ward is going to stay at the weight, he has nobody else to fight anyways.

Having said that, I think there is a lot more room for Ward to improve than Froch and it would only be a more decisive win this time around. Neither guy has ever rematched anyone if I'm not mistaken though so it'll be interesting to see in that sense. Being so much better technically and tactically all Ward needs to worry about is being in top shape and making some small adjustments. I don't think there's much Froch can do to change the outcome, and he isn't a lethal one punch guy or anything. Maybe he could hire Ross the amateur judge to train him and work out the game plan.