Berrigan, who is primarily a hooker, but provides good utility value, can also play centre, wing, five-eighth and lock.
The 32-year-old signed a 4 year deal with Hull, and three years into it, he was granted a release by Hull, with the Gold Coast Titans and the New Zealand Warriors the interested parties.
At this stage, the Warriors seem favourites to secure his signature, in what a move that is sure to boost their squad.
Since joining Hull for the 2008 season and beyond, Berrigan made 74 appearances for the KC Stadium outfit, and he also won the player of the year award in his debut season, that also included a surprise appearance in the Challenge Cup Final for Hull.
Injuries have always been a problem for Berrigan however, and his form dipped somewhat over the last two years, with chopping and changing going on in light of injuries and shifting positions.
“I have loved my time at Hull FC and leave with many happy memories and friendships,” Berrigan said.
“After a tough year personally in terms of injuries and the passing of my father earlier this year, I want to move closer to my mum and family and I’m looking forward to spending more time with them.”
Hull’s chief executive, James Rule, added: “On behalf of the directors, staff, coaches, players and fans, I would like to thank Shaun for his contribution to Hull FC and wish him and his family the best of luck for the future.”