Barnett has been a defensive backs coach with Michigan State for a decade, and he was recently promoted to assistant head coach/co-defensive coordinator.
Campbell's previous experience was as a defensive backs coach with Western Michigan from 2010-12 and he then held that same position at Kent State from 2013-15.
He starred at Michigan State before going on to enjoy a seven-year National Football League career with the Cleveland Browns, New England Patriots and Minnesota Vikings.
Feldman added that Barnett is highly thought of by the players and the coaching staff at MSU. Taggart replaced Jimbo Fisher, who took the head coaching job at Texas A&M. Big hire for Taggart.
He was at LSU for just one year before moving on to Cincinnati as the defensive backs coach from 2004-2006.
Barnett plays a high pressure, physical defense that should bring fond memories of what FSU fans experienced in its legendary run from 1987-2000. This year, he had a D that started SIX sophomores and one true freshman, and that group ranks No. 7 in the nation in total D. Very few leaks occurred up until the very end of the process.
In leaving his alma mater and coaching home of a decade, Barnett could see some serious windfall from Willie Taggart's coaching salary pool.
Barnett has primarily run a 4-3 defense at MI state, but he has also run elements of the 3-4 and has a very aggressive philosophy.