ADAM Treloar will inform Greater Western Sydney on Tuesday that he wants to be traded, with the out-of-contract midfield star set to nominate Collingwood as his preferred new home.

AFL.com.au understands Treloar, 22, is set to meet with GWS officials on Tuesday, when he will inform them of his decision to leave the club after 79 games in four seasons

Although Treloar is keen to become a Magpie on a long-term deal believed to be worth about $750,000 a season, it would be premature to dismiss the possibility that he could end up joining his other serious suitor, Richmond.

Given Treloar is not a free agent, Collingwood will have to broker a trade with the Giants in October's player exchange period.

On Monday night, Magpies coach Nathan Buckley said the club had enquired about securing Treloar's services but didn't know if he had made up his mind. 

"We've been in conversations with his management so we're keen to further those conversations once he's made his decision on whether he's staying or not," Buckley told Fox Footy.

GWS will understandably put a high value on the midfielder who has finished ninth, fifth and fourth in the club's best and fairest award in his three completed AFL seasons, and should finish in the top five again this year after averaging 27.5 disposals a game (ranked first at the Giants).

Some industry sources believe the Giants could demand as much as two first-round picks for Treloar, while others believe a first-round pick packaged with a player or later pick(s) could get the deal done.

If Collingwood is unwilling or unable to meet the Giants' demands, the Tigers could swoop.

Speculation about Treloar's future has raged on all season, and became more and more heightened as the Giants progressively re-signed fellow star youngsters such as Jeremy Cameron, Dylan Shiel, Devon Smith, Stephen Coniglio and Will Hoskin-Elliott.

North Melbourne was also understood to have offered Treloar a lucrative long-term deal, but bowed out of the race for his signature recently.

Treloar was one of the Giants' 17-year-old concession selections ahead of their inaugural 2012 season, along with the likes of Cameron, Shiel, Tom Bugg, Nathan Wilson and Jack Hombsch (since traded to Port Adelaide).