Greater Western Sydney will ask Fremantle to provide a top-20 draft pick in exchange for contracted defender Nathan Wilson.

Wilson, who still has a year to run on his contract, requested a move home to WA late last month for family reasons, with the Dockers nominated as his preferred destination.

The two clubs sat down for discussions at Etihad Stadium as trading officially got underway today, but have yet to reach an agreement.

Giants list manager Craig Cameron said Wilson’s contract gave the expansion club leverage in the deal and outlined what he would expect in return for the 24-year-old.

The Dockers hold early picks in the first, third and fourth rounds of this year’s national draft. They gave away their second-round selection to Gold Coast last year in a pick exchange.

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“At the moment we’re talking to Fremantle - they’re a little bit hamstrung in terms of their position in the draft this year, so we’re trying to work out exactly where they’re at,” Cameron told Trade Radio.

Camera Icon Dockers list manager Brad Lloyd speaking at Etihad Stadium today. Credit: Getty Images

“Nathan’s contracted so from that perspective that gives us more flexibility in this trade conversation.

“The ability to trade future picks helps us, so I sort of see Nathan as a pick somewhere under 20.”

The Dockers will be loathe to exit next year’s first round for Wilson, meaning the Giants will likely have to settle for less than asking price.

The deal is likely to involve their 2018 second-round pick and potentially another late selection.

Wilson and Gold Coast forward Brandon Matera are Fremantle’s two main targets this trade period.

In order to get the deals done, the club is set to offload homesick youngster Harley Balic to Melbourne and forward Hayden Crozier to the Western Bulldogs.

Both deals would likely be in exchange for draft picks.