The defensive line would be a good place to start, as San Fran’s usually ferocious defense had a hard time finishing at the QB in 2024. The 49ers closed the year with 37 total sacks, which ranked tied with the depleted Detroit Lions for 23rd in football.

The San Francisco 49ers have had a revolving door at defensive coordinator since Robert Saleh left to become the head coach of the New York Jets in 2021.

Former New York Jets head coach Robert Saleh has agreed to terms with the San Francisco 49ers to become the team's defensive coordinator, NFL Network Insider Tom Pelissero reported on Friday.

The San Francisco 49ers have long established their strong defensive identity, and with Robert Saleh back at the helm

Saleh had interviewed for three head coaching positions but had committed to head coach Kyle Shanahan and general manager John Lynch that, should be not get another head coaching job, he would return to San Francisco as defensive coordinator,

Robert Saleh's return to the San Francisco 49ers brings something special back to the team, according to Fred Warner, who recently reminisced about the good times they had when the now-defensive coordinator was with the franchise.