Powerhouse prop Ofa Fainga’anuku moved to Sixways from Glasgow Warriors in the summer of 2013 and made 20 appearances during his first season at the club.
He scored his first try for Warriors against Sale Sharks in the Aviva Premiership in November 2013 and went on to claim the number one shirt in the second half of the 2013/14 campaign.
The giant front-row represented Tonga in the 2012 Pacific Nations Cup and previously had a spell with the Waratahs in Australia.
Fainga’anuku, who has also featured for the Central Coast Rays and Eastern Suburbs in Sydney, started out in rugby league, but later switched to union.
The loosehead's form for Warriors saw him selected for Tonga against Fiji in June 2014.