GREATER Western Sydney's off-field departures have reached a worrying level, with a high-powered director quitting and pulling $1million of funding allocated for 2016.

Following a dispute with chief executive David Matthews, influential board member Paul Moore has walked out on the League's newest club.

It is believed Moore's decision stems from a belief that the money he provided the Giants – money which he requested be invested in Giants academy and grass roots programs – was being spent elsewhere.

Moore also provided money to the Sydney Swans' player academy and the Swans will lose that funding on the back of Moore's decision.

Moore has pumped more than $2 million into both clubs' operations in the past four years, and had increased his commitment up to $1 million for 2016 before his decision to cease involvement.

In the recent past, list chief Stephen Silvagni, head of football Graeme Allan and welfare boss Craig Lambert have exited the Giants.

All three have been crucial in player retention at the club, which has seen Tom Boyd, Adam Treloar and Taylor Adams seek new football homes in the past three years.

Forward Cam McCarthy does not want to play again for the Giants.

The next player retention challenge is 2012 No.1 draft pick Lachie Whitfield, who has already received significant offers to return to Victoria.