Former NFL player and scout Bucky Brooks knows the ins and outs of this league, providing keen insight in his notebook. Today's installment spotlights five teams to keep a close eye on this offseason ... Already one of the NFL's banner franchises, the Pittsburgh Steelers are suddenly a subject of even greater fascination. In fact, I see Pittsburgh as the most interesting team in the NFL this offseason. Whenever a two-time Super Bowl champion and future Hall of Fame quarterback exits the stage, it kicks off a new era for a franchise. For Pittsburgh, which just went 9-7-1 and lost on Super Wild Card Weekend, Ben Roethlisberger's departure will give Mike Tomlin an opportunity to re-establish the culture of a team that has been a perennial contender throughout the head coach's tenure.