With the Buffalo Bills allowing defensive coordinator Bobby Babich to depart for Green Bay, the team finds itself searching for a new coordinator much like it needed a head coach when it fired Sean McDermott. Jim SchwartzDecember 21, 2014; Oakland, CA, USA; Bills defensive coordinator Jim Schwartz before the game against the Oakland Raiders at O.co Coliseum. | Kyle Terada-Imagn ImagesTRENDING: Under-the-radar internal candidate predicted to land Bills' offensive coordinator jobSchwartz, the Bills' defensive coordinator in 2014 when Buffalo led the NFL with 54 sacks, is unhappy with his current situation in Cleveland. Jim LeonhardSep 15, 2013; Orchard Park, NY, USA; Bills defensive back Jim Leonhard (35) defends Carolina Panthers tight end Greg Olsen (88) at Ralph Wilson Stadium. The Bills' defensive coordinator opening presents a significant opportunity.