The second-rower will join the Blue and Gold on a three year deal, which includes an option in the third year.
Matterson is a Parramatta Eels junior and played three years in the lower grades representing the Australian School Boys and Australian Junior Roos.
“It’s always great to see the return of a local Parramatta Eels junior,” said Parramatta Eels Head Coach Brad Arthur.
“He’ll have a whole pre-season with the team and I know he’ll be an asset to our Club next year.”
Matterson will start pre-season training with his new club this month.