Coach Lovie Smith wants a defensive coordinator who buys into his cover-2 schemes. He needs somebody that doesn't mind working on a staff that includes the Bob Babich and Smith, who each tried unsuccessfully to coordinate the defense the past two seasons.
Then there's Rod Marinelli, the former Lions coach who has 34 years of coaching experience.
In other words, the team's new defensive coordinator won't lack experienced assistants who know the cover-2 inside out.
It's an interesting job to fill given the influence Smith, Babich and Marinelli will likely have. Suffice it to say, the new defensive coordinator won't have the same autonomy that recently acquired offensive coordinator Mike Martz will enjoy.
Former Chiefs coach and Smith protege Herm Edwards told me to be on the lookout for a younger, up-and-coming coach who wants to learn the cover-2 while adding "play-caller" on his resume.
Smith has hinted that he may fill the position in-house, which would likely mean that Marinelli would call defensive plays for the first time in his professional career.
Marinelli's job may be the most important on the staff without the extra responsibilities. He didn't make the desired impact last season. The defensive line is the key to the success of the defense, and perhaps even the team, and therefore allowing Marinelli to devote all his time and energy to lighting a fire under Tommie Harris, Mark Anderson and Marcus Harrison makes sense.
Colleague Sean Jensen made a case for Alan Williams the other day. The Colts' defensive backs coach knows the Tampa-2 and has done a fantastic job coaching up an Indianapolis secondary that has been plagued by injuries in recent years. He would be a solid candidate and Smith didn't rule out delaying the decision so he could interview Super Bowl coaches.
Because Babich does a good job coaching the linebackers, and Marinelli is reputed to be one of the league's best defensive line coaches, it's fitting that the new hire will be a secondary coach. The Bears could use some help in that area, from both a coaching and a personnel standpoint.