Already, there is talk of a third, sure to thrill encounter between Froch and Kessler, as well as talk of a rematch between Froch and the man who was too tricky for him a couple of years or so again, Andre Ward. Either fight would be absolutely massive on either side of the Atlantic (or anywhere in Europe in the case of the rubber-match) and it’s probably fair enough for Froch, for far too long underappreciated, to take his pick.
In terms of sheer action, a third rumble between Froch and Kessler would be the best fight, but in terms of legacy and his placing in the history books, Froch needs to beat the sublime Ward.