Dave Wannstedt is taking over as the Bills defensive coordinator, according to an ESPN.com report on Monday. Wasting little time, head coach Chan Gailey spent Monday charting an offseason course mixed with both change and continuity in a bid to turn around the Bills after their seventh straight losing season. The first and most significant move had George Edwards being fired as defensive coordinator and replaced by Wannstedt. It's a promotion for Wannstedt after he spent this past year serving as assistant head coach/inside linebackers.