Coffey initially joined the Oilers in 2017 and previously served as an assistant coach from November 2023 through the 2024-25 season.
During that stint, the team allowed the fifth-fewest goals per game. The 64-year-old expressed excitement to work alongside head coach Kris Knoblauch and build momentum for the playoffs, noting 24 games remain in the regular season. He is expected to rejoin the team on Friday.