re: Why is Nick unable to succeed in the NFL?

By the time a player becomes a veteran in the NFL, they know as much as the coaching staff. The NFL requires coaches to be able to work together with the players as opposed to dictating everything. Plus, the coach doesn’t control the roster/depth chart 100%. Saban could have probably adapted and been successful, but he was at freaking Miami. Dan Marino couldn’t even win a SB there.