As first reported by SEN’s Sam Edmund earlier today, Crouch has nominated St Kilda as his new home for 2021.
He departs Adelaide after 93 games across eight seasons after making his debut in 2013.
According to Fox Sports’ Tom Morris and Ben Waterworth, the Saints have offered a long-term deal with triggers to extend the contract to five seasons.
As Crouch is a restricted free agent, the Crows have the right to match any offer he receives and force a trade.
Crows Head of Football Adam Kelly said the club will now work through the process to ensure they are properly compensated.
“We will now consider our options and make decisions that are in the best interests of the Adelaide Football Club,” Kelly told afc.com.au.
Hartigan, an unrestricted free agent, will also depart West Lakes as he seeks a move back to Victoria after 113 games over eight seasons.
According to AFL Media’s Mitch Cleary, the defender will join Hawthorn on a three-year deal.
“Kyle is a quality individual who has consistently given his all both on and off the field during his eight seasons with the Club,” Kelly said.
“He has worked tirelessly with the Adelaide Crows Foundation and will always be a part of the Crows family.
“We wish Kyle, Emily and Hazel all the very best for their move to Victoria.”
Free agency runs from October 30 to November 6.