The eldest of four brothers to play in the NRL for the Knights, the 26-year-old centre was ever present in 2017 when he made 24 NRL appearances, scoring seven tries.
Mata’utia has made the decision to continue his career in England with Leigh Centurions after fruitful discussion with the Club’s Head of Rugby, Keiron Cunningham in the face of interest from rival clubs.
Leigh Centurions owner Derek Beaumont said: “This is a significant signing for the Club and demonstrates one of the benefits of having Keiron at the Club. I know that some people were disappointed when we did business with Warrington on Bryson Goodwin and I hope this news shows our clear intentions.
“Peter is a proven quality NRL player who has been ever present this season and has plenty of energy in his game. He has age on his side and will add a lot to the squad and be a pleasure to watch in a Leigh Centurions shirt.
“Although Peter joins us in the Championship he is aware of our Club’s ambitions and his signing is indicative of his belief in that vision. I look forward to welcoming him to our Famileigh.”