https://www.mercurynews.com/2023/01/31/49ers-dc-demeco-ryans-agrees-to-become-texans-head-coach-report/

The 49ers are in the market for a new defensive coordinator.

DeMeco Ryans, who took over the 49ers’ defense under Kyle Shanahan in 2021, reportedly agreed to become the head coach of the Houston Texans on Tuesday — which means there will be a new coach running the defense for the third time in four seasons.