Leo Santa Cruz vs Carl Frampton...
Leo is always fighting like a maniac, and Frampton will be putting it on Leo too. That will be a great fight, and I've been reading that both guys are willing and able to make a deal. One of the best fights you could make at 122lb as well.
EDIT: I take it back, my pick is Juan Francisco Estrada vs Giovani Segura. It's rumored to happen next for both guys, and that fight is going to be f*cking CRAZY.
Segura could drag a dead man into a brawl (a line I once read about Katsidis), and Estrada has no problem with that. Both are extremely exciting, and little guys always put on great fights.