Speedy
Former Yeller Dweller
Kelly is only 34 years old and has only been coaching in the NFL since 2014, all with the Texans.. Now tell me why you think a young coach just beginning his career is unable to adapt to, and learn, a new system.
He was with OB at Penn St too. So I don't know if he can adapt and learn something new or not. What I do know is that he's been under OB's umbrella for the last 9 years.