Sox should sign him. Literally have nothing behind PK and Dunn. Big contract, but nothing that would be disastrous if he doesn't pan out. Plenty of money coming off the books so as long as the contract is reasonable I say do it. What do the Sox have to lose? Could be an absolute steal if he develops as some think he will.
Ideally, maybe we could also sign Saltalamacchia or McCann but I'm dreaming I know.