Greaves, who the Hawks delisted at the end of last year, returned to his former WAFL club East Perth ahead of the 2022 season, where he played 10 matches to average 16.5 disposals, 3.6 marks and 3.5 tackles per game.
Following 12 months with the Royals, the 22-year-old recently informed the club of his decision to halt his AFL career in favour of pushing for a potential list spot in the NFL as a punter.
Joining ProKick Australia, an institute that has been home to a wide range of ex-AFL players-turned-punters, Greaves expressed his excitement for the future.
"The opportunity to live in another Country, to enjoy new experiences and receive a free education, was a hard one to pass on," Greaves said, via eastperthfc.com.au.
"This is a new sport, that will come with new challenges, however I'm very excited about the opportunity.
"It's a bittersweet goodbye for me, as I can see the Club heading in a great direction next year. I've created great friendships and relationships with not only the players, but members as well. I'll be keeping a close eye on Ross and the boys next year, cheering them on."
Greaves played 10 games for Hawthorn between 2019-2021 after joining the club through the 2018 Rookie Draft.
He joins the likes of Flynn Appleby, Ryan Garthwaite and former teammate Jackson Ross in turning in his AFL career for an NFL pursuit, hoping to join ex-Saint Arryn Siposs in making the national US competition.