"49ers' Defensive Coordinator Shake-Up: Shanahan's Bold Move and 11 Potential Replacements"

The San Francisco 49ers are in search of a new defensive coordinator after firing Steve Wilks, with head coach Kyle Shanahan considering both internal and external candidates. Potential replacements include familiar names like Bill Belichick, Pete Carroll, and Mike Vrabel, as well as current 49ers assistants such as Johnny Holland and Nick Sorensen. The team is seeking a coordinator who can align with their defensive philosophy and provide continuity within the coaching staff.