Caleb Williams' potential, Bears roster rankings with PFF's Sam Monson

<p>In this episode of the Under Center Podcast, Kenneth Davis and Josh Schrock are joined by Sam Monson, lead NFL analyst for Pro Football Focus, for an in-depth discussion on the Chicago Bears. Sam reveals how PFF conducts its rankings (0:25) and compares the Bears’ roster to the Packers and Lions (2:39). Sam discusses how the Bears' supporting cast could impact Caleb Williams in Year 1 (6:51), suggesting he could break every Bears single-season QB record this fall (8:15). Sam highlights his biggest concerns about the Bears’ defense (15:41), evaluates their offensive line (19:24) and offers his take on what's a realistic way to judge Caleb Will...