49ers gave Eric Mangini a 3-year deal to be their defensive coordinator.
Fantasy Impact:
Mangini was the DC for the Patriots in 2005, and they finished 25th in yards and 17th in points allowed. He spent the next five years as the head coach of the Jets and the Browns, and his defenses averaged a rank of 21.8 in yards and 15.4 in points allowed over that span. He spent the last two seasons as the 49ers' tight ends coach.