Chad Kelly was never a Clemson Tiger. He was recruited by Clemson, he practiced, he played the spring game, but he threw a hissy fit and got himself kicked off the team. He disrespected the program. Even when he "parted ways" he showed no remorse, no regret. His lack of respect for the coaches and program and his immaturity should give you an idea of the kind of person he is.
So root for him against Bama all you want, but don't call him a Tiger. And don't forget the kind of person he is.