With Shiano getting the axe in Tampa I wonder if that whole staff is out...If so I'd add Bill Sheridan to the DC wish list.
From his profile on the Bucs website...
"In his first season as the Buccaneers defensive coordinator, Sheridan helped turn around the team’s run defense. After finishing last in the league in run defense in 2011, the 2012 Buccaneers finished first in that category, becoming the first team since the merger to go from last-to-first in a single season."
Sounds like a guy the Bears could use.