Brumbies coach Dan McKellar is weighing up an approach from Rugby Australia to join the Wallabies as Dave Rennie's forwards coach and his potential successor.

Despite recently re-signing in Canberra until the end of 2021, the Herald revealed on Friday that Rennie and RA director of rugby Scott Johnson had approached the Brumbies about recruiting McKellar to work under Rennie.

Bombshell: Dan McKellar is in talks to join the Wallabies Credit:AAP

While no deal has been secured and McKellar is said to be undecided, the move would see the Queenslander leave the Brumbies, where he has been head coach since Stephen Larkham's departure at the end of the 2017 season.

Senior Australian rugby sources have told the Herald that RA director of rugby Scott Johnson has pitched McKellar with a plan to apprentice under Rennie for the term of his four-year deal before taking over as Wallabies coach after the 2023 Rugby World Cup, all going well. Johnson and Rennie have both said publicly that the next Australian coach should be home grown.