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FREMANTLE is set to trade its first-round picks in the next two NAB AFL Drafts to secure young key forward Cam McCarthy, according to the Giant's manager.

McCarthy has told GWS he is homesick and wants to return to his home state and play with the Dockers, but the Giants have been adamant they will not trade the contracted 20-year-old.

His manager, Colin Young, said Fremantle was preparing to table a tempting offer that GWS would find hard to refuse when the NAB Trade Period opens on Monday morning.

"Fremantle will come out in the next few days and they're going to give GWS their first-round (selection) this year and their first-round next year … 100 per cent," Young told radio station SEN on Friday morning.

"If GWS need those first-round picks and players at the end of the trade period, they may well do it."

GWS should play hardball on McCarthy, departing coach says

Young said nothing had changed from his client's perspective since he returned to Western Australia at the end of the season and declared he was homesick and desperate to play in his home state.

"Cam hadn't been home to WA for a while, so when he touched down, I suggested 'Why don't you go and spend some time with your family for two or three weeks?'," Young said.

"He said to me he was absolutely desperate to stay in Western Australia and didn't want to return to GWS and play there."

GWS coach Leon Cameron told Young on Monday that the club would not trade McCarthy, and Young was unsure if he would be able to get the promising forward back to Perth.

"There's going to be a lot of twists and turns along the way," he said.