Monday, San Francisco 49ers coach Jim Harbaugh talked about the possibilities of losing some assistant coaches.49ers' offensive coordinator Greg Roman, defensive coordinator Vic Fangio and defensive line coach Jim Tomsula are getting in head-coaching openings. Now, another member of Harbaugh's staff could also attract interest.Last week, the Miami Herald reported 49ers' senior offensive consultant Eric Mangini could be a candidate as the Miami Dolphins' general manager should then team make a change.