Urlacher moving on?

The Chicago Bears are making big changes on the coaching staff this offseason: Lovie Smith was fired and eventually replaced by Marc Trestman, who is in turn hiring a slew of new coaches. Though the Bears had one of the best defenses in the league in 2012, DC Rod Marinelli has elected to move on, and there will need to be a replacement. On the field, there are a number of impending free agents, perhaps none more visible than LB Brian Urlacher.