re: Sark leaving Bama for NFL

This consistent staff turnover will do 1 of 2 things:

1.) Expedite Saban's retirement. The constant turnover has to get troublesome as it takes his attention off coaching, developing, and recruiting.

2.) Keep Saban in the game longer. It's a consistent challenge for him to hurdle that most other coaches don't have to deal with. Saban welcomes the challenge and likes to beat it.