David who joined the club in 2009 from Saracens has become a crowd favourite for his leadership skills and consistent performances week in week out.
David said, " I have enjoyed my time at the club and whilst we are currently at the foot of the Premiership, there is a good strong team spirit and we feel we can rescue our season and reward our loyal fans. I look forward to spending my future years at the club."
Director of Rugby Steve Diamond said, " I have had the pleasure of coaching David at both Saracens and Sale Sharks. He is a great player and a natural leader. We are delighted he has agreed a new deal."