CLEMSON, S.C. — Clemson fans don’t seem concerned about the massive losses on last year’s top-ranked ranked defense, the muddled picture at running back or the departure of high-powered offensive leader Chad Morris to SMU. No, there’s only one issue anyone wants to chat about when it comes to the Tigers: Can quarterback Deshaun Watson stay healthy. Watson, the smiling, friendly sophomore, said he will hear that question a dozen or so times a day from students, fans and others. He responds the same way, “I’m ready to go.”