The seventh installment focuses on the linebackers, a group that has endured a wave of turnover: The linebackers slogged through easily the most tumultuous offseason of any Cal position. Nathan Broussard, who would’ve been a strong candidate for a medical redshirt, left the team. [...] Hardy Nickerson, who racked up a team-high 112 tackles last season, transferred to Illinois to play for his father, Illini defensive coordinator Hardy Nickerson Sr. [...] desperate was Sonny Dykes for depth that he moved defensive backs Derron Brown and A.J.