While the Irishman is keen to play for the Cats and the club is interested in signing him, the sticking point remains in finding a suitable deal.
Geelong does not possess a first round draft in this year’s draft after trading it to Carlton for Lachie Henderson last year, while salary cap space is also an issue, given the inclusions of Patrick Dangerfield, Zac Smith, Scott Selwood and Henderson in 2016.
Richmond has requested midfielder Josh Caddy in exchange for Deledio, while The Age has reported that Carlton will also seek a player for Tuohy.
Both Cockatoo and Lang spent the majority of 2016 in the VFL, however, are seen as important players in the future for the Cats, showing glimpses for brilliance in their short careers.
Cockatoo, drafted with pick 10 in 2014, has played 21 games, while Lang has made 34 appearances for Geelong since being selected with pick 16 in the 2013 National Draft.