NORTH Melbourne has been the biggest free agency raider of the past two years, but the Roos are set to enter 2015 as one of the clubs most vulnerable to rival recruiting splurges.

AFL.com.au has compiled a preliminary list of next year's free agents, with 69 players currently eligible.

Our list shows North and Geelong are the most exposed teams in the competition, with each club having seven prospective 2015 free agents.

Adelaide and Fremantle have the next most with six each, while Collingwood has the fewest with just one, followed by Port Adelaide and Brisbane Lions (two each).

North has not lost a player to free agency since its introduction in 2012.

In the same time, the Roos have picked up three opposition free agents (St Kilda's Nick Dal Santo in 2013, Carlton's Jarrad Waite and Western Bulldog Shaun Higgins in 2014) – no other club has recruited more than two – while the Cats secured Jared Rivers from Melbourne in 2012.

However, next year things could be different.

North's prospective 2015 free agents include captain Andrew Swallow, star veterans Brent Harvey and Drew Petrie, key defender Nathan Grima and injury-plagued key-position player Robbie Tarrant.

Swallow is set to be a restricted free agent given he will be coming into free agency for the first time in his career and is one of the Roos' highest-paid players.

This would give North the right to keep its skipper simply by matching any rival offer, but it should be noted no club has done this in free agency's three-year history.

Harvey and Petrie will be unrestricted free agents, with first-time free agents Grima and Tarrant almost certain to fall in the same category.

NORTH’S 2015 FREE AGENTS:
Michael Firrito
Nathan Grima
Brent Harvey
Scott McMahon
Drew Petrie
Andrew Swallow
Robbie Tarrant