Kenny-Dowall made his NRL debut at the Sydney Roosters in 2007 and has played 224 NRL games. He won a premiership with the Roosters in 2013 and has played 21 matches for New Zealand.
“We welcome a player of Shaun’s talent and experience to the Club,” CEO Matt Gidley said.
“Shaun is an international and premiership winning player and I have no doubt he will impress both on and off the field.
“While Shaun has been through a difficult period recently, following our discussions we are confident he will make a positive contribution to the Club and community.”
For Kenny-Dowall, joining the Knights provides a great opportunity.
“I am really fortunate to have had a successful career so far; I look forward to joining the Knights and having a positive impact on the Club,” Kenny-Dowall said.
“I am putting my recent challenges behind me and look forward to starting this new chapter at the Knights.
“Newcastle is a proud rugby league community and I want to repay the Club for the faith they have shown in me.”
Kenny-Dowall is unavailable for selection this week due to a hamstring injury.
This was first published on the Newcastle Knights website