Hard to see where the next big money-spinner for Matchroom on home turf is, really. Linares would absolutely ruin Campbell, and it wouln't be PPV-worthy, Brook won't get the Khan fight, Taylor and Adams' appeals aren't going to be universal (female boxing has someway to go before they can draw like UFC women do), and Quigg looks a shell of a fighter he once was ever since Frampton ruined his jaw.
Groves vs DeGale II, perhaps? If the former beats Chudinov? Fury vs AJ?