Homesick Greater Western Sydney forward Cam McCarthy looks certain to train with South Fremantle in the WAFL.

As flagged by WAtoday last month, the Bulldogs had been approached by McCarthy's management about the possibility of the 20-year-old training with the club.

Cam McCarthy in action for the GWS Giants in 2015. Credit:Getty Images

McCarthy is on indefinite leave from GWS after he left the club in January to head home to Perth to deal with an ongoing mental issue.

A source said the power forward could be training with the Bulldogs as early as Thursday night.