Buckner, 46, is a former second-round pick of the Steelers back in 1994. He played 12 seasons in the NFL for the Steelers, Bengals, 49ers and Panthers.
Buckner began his coaching career ath Charlotte (NC) Northside Christian as their head coach in 2008. He later took an intern position with the Steelers before the Cardinals hired him as their defensive line coach in 2013.
Buckner spent the past five years in Arizona.