Geelong has signed ex-basketballer Joe Furphy as a Category B rookie ahead of next season.

Furphy represents Geelong's first list addition of the 2024 off-season, ahead of the trade and free agency period, as well as November's drafts.

The 24-year-old grew up in Melbourne, initially wanting to pursue a professional basketball career after making a single appearance for the Northern Knights in 2018.

Furphy, standing at 203cm, projects as a key-position prospect for Chris Scott's side.

Geelong General Manager of Football Andrew Mackie said the Cats were 'keen to develop' the 'raw product'.

"Joe is a raw product who has some very exciting attributes. He has a big leap and other traits that we are keen to develop," Mackie said on Wednesday.

"Basketball and Australian rules football have a lot of transferrable skills and as a Club, we are excited to see what Joe can do as part of our development program.

"With Joe already spending time in various different sporting environments, we feel he is well placed to take on the challenge of being an AFL player."

Furphy detailed his 'surreal' feeling upon signing with the Cats.

"It is a pretty surreal feeling, to be honest," he said on Wednesday.

"Geelong is such a great club with a rich history and strong values. I'm thankful for the opportunity to pursue a football career and I'm looking forward to starting pre-season."

Geelong's playing group will return to Kardinia Park in November for 2024 pre-season training, which is when Furphy will acquaint himself with his new Cats teammates.

Furphy's signing comes after Richmond added ex-NBL talent Oliver Hayes-Brown as a Category B rookie in late August, having previously played for the Perth Wildcats.