Getty Head coach Matt LaFleur and the Green Bay Packers are hiring Jonathan Gannon as their next defensive coordinator. One of the biggest changes the Green Bay Packers made during the offseason was hiring Jonathan Gannon to be their defensive coordinator. Jeff Hafley left the position after a two-year tenure to take the head coaching job with the Miami Dolphins . Gannon joins the Packers following a three-year run as the Arizona Cardinals head coach. Gannon has an extensive background as a