ADELAIDE defender Kyle Hartigan wants to join Hawthorn after informing the Crows he will exercise his free agency rights.

Hartigan will move to Waverley Park on a minimum two-year deal. 

His decision to depart the Crows follows that of teammate Brad Crouch, who is headed to St Kilda on a long-term deal as a restricted free agent. 

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Crouch and Hartigan are both managed by Garry Winter at W Sports Management. The club confirmed both had informed them on Tuesday of their decisions. 

Hartigan, 28, is an unrestricted free agent so the Crows will not get any chance to match an offer for him.

Hartigan played 113 games for the club, including 12 this season, and also featured in the Crows' Grand Final loss to Richmond in 2017.

He is the third free agent to exit the club, following Crouch and Rory Atkins, who will take up a four-year deal at Gold Coast. Adelaide will be compensated in picks dependent on how lucrative their new contracts are. 

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They hold the No.1 pick at December's NAB AFL Draft and could secure the No.2 choice for Crouch if the Saints' five-year offer is strong enough. 

The Crows have already farewelled Bryce Gibbs, who retired with a year to go on his contract, and have delisted Riley Knight, Ayce Taylor and Patrick Wilson.