Mangini served as the 49ers' tight ends coach in 2014 after spending 2013 as an offensive consultant for the team. His previous background was on defense, as he served as the New England Patriots' defensive coordinator in 2005 after spending 2000-04 as defensive backs coach.
According to Barrows, the 49ers have also interviewed former Raiders defensive coordinator Jason Tarver for an unknown position. Tarver spent 2005-10 as the 49ers' outside linebackers coach and 2001-04 as an offensive assistant.
San Francisco finished 8-8 in 2014, missing the playoffs for the first time in four seasons. The defense finished fifth in total defense (321.4 yards allowed per game) and 10th in scoring defense (21.2 points allowed per game).
- Mike Fiammetta