Parramatta have moved swiftly to secure Manu Ma'u for two years following his barnstorming NRL debut against the Warriors.

The 25-year-old back-rower was named man of the match following his display in Sunday's 36-16 first round win and he has now signed a contract extension that will keep him at the club until the end of the 2015 season.

It caps a remarkable change of fortunes for the New Zealander who spent three years in prison in Auckland for his part in a vicious gangland brawl in 2007.

Ma'u said his teammates played a huge role in his decision to stay and he wanted to thank them for their support in helping him turn his life around.

"I feel good - it's good to have my future secured here. The club had faith in me, and I want to give back to them," Ma'u said.

"The boys made it easy for me, and made me feel welcome. I love them."

Coach Brad Arthur said he was pleased to get the chance to continue to work with Ma'u.

"He has been extremely committed this pre-season and I look forward to continuing to work with him into the future," Arthur said.