Robert Saleh was a first-time head coach when he joined the New York Jets back in 2021 but the calamity of his tenure left him needing "therapy" in the aftermath.

Let all of their defensive free agents leave and replace them with rookies and second-year players. As a result, the 49ers defense might take a step backward before it takes two forward. But last season,

Returning 49ers defensive coordinator Robert Saleh shared his philosophy and his goal in the role: staying well ahead of the offensive trends.