San Francisco 49ers head coach Kyle Shanahan is on the hunt for a new defensive coordinator following the departure of Steve Wilks after just one season. Wilks' exit marks the fourth time Shanahan is seeking a new coordinator during his tenure.

The decision to part ways with Wilks was announced on February 14th, with Shanahan citing a mismatch between Wilks and the existing defensive system as the reason for the change. Shanahan emphasized the importance of finding a coordinator who aligns well with the team's defensive philosophy.

Candidates for the position include former Los Angeles Chargers head coach Brandon Staley, Kansas City Chiefs defensive backs coach Dave Merritt, as well as in-house options Nick Sorensen and Daniel Bullocks. The team is also considering external options like Texans linebackers coach Chris Kiffin and Jets' defensive coordinator Jeff Ulbrich.

Shanahan and the 49ers are in no rush to make a decision, given their recent success that has seen them reach the Super Bowl. The team's defensive system has remained consistent over the years, focusing on a 4-3 scheme with an emphasis on zone coverage.

While the search for a new coordinator continues, Shanahan remains open to different possibilities but leans towards maintaining the core principles that have led to the team's defensive success. The next coordinator is likely to have experience in coaching linebackers and be familiar with San Francisco's defensive scheme.

Regardless of who the 49ers ultimately choose for the role, it is unlikely that there will be a significant departure from the defensive style that has served the team well over the past seven years.

General manager John Lynch expressed confidence in the team's defensive identity, indicating that any changes will be made with the goal of further evolving and improving the defense rather than overhauling it completely.