The 49ers are finding their replacement for DeMeco Ryans.  ESPN reports San Francisco is hiring Steve Wilks as the team's new defensive coordinator.  Wilks was most recently the interim head coach of the Carolina Panthers after Matt Rhule was fired five games into last season.  The 53-year-old Wilks had been hired as the Panthers' defensive passing game coordinator and secondary coach.  Wilks will replace Ryans, who left to take the head coaching position with the Houston Texans.