Cook, 24, burst onto the NRL scene at the back end of the 2015 season with some energetic yet controlled performances out of dummy half in the Bulldogs’ charge to the semi-finals.
A Helensburgh junior, Cook made his first grade debut with the Dragons in 2013 before joining the Bulldogs in 2014.
Rabbitohs Head Coach Michael Maguire is pleased to be adding Cook to the Rabbitohs’ roster for 2016.
“We’ve been keeping an eye on Damien for a while now having recognised his talents, particularly out of dummy half,” Coach Maguire said.
“He’s gained great experience from what he’s done this year, he’ll add depth to our squad at dummy half, from talking to him you can see he has a professional approach to the game and his training, and we’re looking forward to having him join the team for pre-season training in November.”