Western Bulldogs champion Brad Johnson will work with Geelong's forwards in a specialist coaching role at the Cats until the middle of January.
The short-term appointment will see Johnson assist in goalkicking and forward play with the club's young forward line.
He attended training at Geelong on Monday as the club's senior players returned.
The Cats added small forwards Brandan Parfitt and Jamaine Jones during the NAB AFL Draft and rookie draft, joining exciting developing forwards Lincoln McCarthy, Nakia Cockatoo and Daniel Menzel alongside key forward Tom Hawkins.
The club has lacked a crumbing forward in recent seasons who can regularly kick goals.
Johnson, 40, became an assistant coach at the NAB AFL Academy in 2011 before becoming its head coach at the end of 2013.
He combined the role with his burgeoning media career until 2015, when Brenton Sanderson took over the position full-time.
Johnson, who lives in Geelong, is still part of the Fox Footy team, hence the short-term nature of his role at Geelong.
Johnson's playing career ended in 2010 after 364 games, three best and fairests and six All Australian selections with the Bulldogs.
The Cats added retired champion Corey Enright to their coaching staff at the end of the season, while former forwards coach Blake Caracella departed to take up a senior assistant's role with Richmond.
Geelong finished third in 2016, suffering a preliminary final thrashing at the hands of beaten grand finalist Sydney.