FREE agency's 'fab four' remain up for grabs but this year's list has thinned markedly over the past month.

Gold Coast's Tom Lynch, Rory Sloane, Andrew Gaff and Jeremy McGovern have headlined the 2018 free agency crop since the AFL released its official list in late March, and all remain unsigned. 

However, some of this year's next most enticing targets have re-signed with their existing clubs over the past month, chief among them Tom McDonald, Marc Murphy, Cam Guthrie and Tom Bellchambers. 

Nonetheless, Neville Jetta, Shaun Atley and Bulldogs quartet Luke Dahlhaus, Tom Liberatore, Jordan Roughead and Mitch Wallis remain up for grabs and should attract rival offers if they are still unsigned when the free agency period opens in October. 

Of the 51 free agents that appeared on the League's list, 45 remain, but 22 of them are 30 or older or will turn 30 this month. 

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2018's remaining free agents 

Adelaide
David Mackay
Andy Otten
Rory Sloane (restricted) 

Brisbane
Rohan Bewick
Ryan Lester 

Carlton
Kade Simpson 

Collingwood
Jarryd Blair
Alex Fasolo
Tyson Goldsack
Josh Thomas 

Fremantle
Hayden Ballantyne
Michael Johnson
David Mundy
Aaron Sandilands                       

Geelong
George Horlin-Smith
Daniel Menzel 

Gold Coast
Jarrod Harbrow
Tom Lynch (restricted)
Michael Rischitelli 

HAWK DRAWCARDS Why Lynch might choose Hawthorn

Hawthorn
Shaun Burgoyne
Taylor Duryea
Paul Puopolo
Ryan Schoenmakers
Brendan Whitecross 

Melbourne
Neville Jetta 

North Melbourne
Shaun Atley (restricted)
Scott Thompson
Sam Wright 

Port Adelaide
Justin Westhoff

Richmond
Reece Conca
Shaun Grigg
Bachar Houli (restricted) 

St Kilda
Sam Gilbert 

Sydney
Heath Grundy
Jarrad McVeigh
Nick Smith 

West Coast
Andrew Gaff (restricted)
Mark LeCras
Scott Lycett (restricted)
Eric Mackenzie
Jeremy McGovern (restricted)

Western Bulldogs
Luke Dahlhaus
Tom Liberatore
Dale Morris
Jordan Roughead (restricted)
Mitch Wallis (restricted) 

Re-signed free agents

Richard Douglas (Adelaide)
Marc Murphy (Carlton)
Ben Reid (Collingwood)
Tom Bellchambers (Essendon)
Cam Guthrie (Geelong, restricted)
Tom McDonald (Melbourne, restricted)