Nick Saban has built a legacy as one of the greatest college football coaches to ever walk the sideline: From Toledo in 1990 to his current 15-year stint leading a dynasty at the University of Alabama. At 71 years old, Saban still enjoys the challenge of “building a program” every season as new players come in, but he says he knows exactly when it will be time to hang up the whistle and step away from the Crimson Tide and college coaching.