Brandon Fisher leaving Detroit to work for his dad in St. Louis

The Lions said after the season that all of their assistant coaches for 2011 would return for 2012, but it turns out that’s not the case.

The Detroit Free Press reports that Brandon Fisher, a defensive assistant in Detroit, is leaving to become an assistant to his dad, Rams head coach Jeff Fisher.

Lions coach Jim Schwartz, a friend of the Fishers and former assistant to Jeff Fisher, has apparently decided to let Brandon leave. Teams have sometimes blocked their assistants from leaving even to join family members’ staffs.

The 2011 Lions’ staff was the first that Brandon Fisher was a part of, although he did spend some time working with the Titans in 2010. Jeff Fisher’s desire to add Brandon Fisher as a full-time staff member in 2011 — and Titans owner Bud Adams’ resistance to that — was reportedly one of the reasons that Jeff Fisher left the Titans a year ago.