revision preference src: Wasting no time after being appointed head coach, Frazier began to restructure the team's coaching staff, including letting go of offensive coordinator Darrell Bevell and hiring Mike Singletary as linebackers coach and Bill Musgrave as the new offensive coordinator. <SEP> tgt: Frazier wasted no time after being appointed head coach. Frazier began to restructure the team's coaching staff, including letting go of offensive coordinator Darrell Bevell and hiring Mike Singletary as linebackers coach and Bill Musgrave as the new offensive coordinator.