The 49ers have put together a sustained run of success over the last four seasons with three playoff trips and perhaps the best roster in football going into the postseason this year.
One of the perils of success is losing people to other teams. San Francisco has experienced this multiple times over the years with assistant coaches like Robert Saleh and Mike McDaniel leaving for head coaching jobs, and front office members like Martin Mayhew exiting for a general manager gig.
