Morgan-Williams is the latest player to sign a new contract at the region, following on from hooker Sam Parry, centre Owen Watkin, locks Bradley Davies and Adam Beard, wing Keelan Giles, fullback Cai Evans, props Tom Botha, Rhodri Jones and Ma’afu Fia and backrower Sam Cross.
They were joined by new signings scrum half Rhys Webb, fullback Mat Protheroe, prop Nicky Thomas and second row Rhys Davies.
Dan Griffiths, Rugby General Manager at the Ospreys, welcomed the news, saying:
“We are fortunate to have exciting young talent at scrum-half, and Reuben is a player that definitely has an X factor with his line breaking ability. He is a tremendous athlete, as he has displayed on both the World Sevens Series and in the PRO14 despite his limited opportunities.
"The challenge for Reuben, as with any aspiring young player, is to stay patient and keep working on improving his game, both technically with his positional basics, and tactically by understanding his role, delivering the game plan, and giving players around him and the team clarity and direction.
"I know Reuben is focussed on making an impression, and looking to take the opportunities to learn and progress. He has the potential to be an exciting player for the club.”