 At the end of the 2016–17 season, Sale announced that Stringer would be leaving the club, while Stringer himself declared his intention to continue playing professional rugby.On 20 July 2017, Worcester Warriors announced that they had signed Stringer on a six-month contract to cover Francois Hougaard while he is on international duty.The contract meant Stringer would be playing professional rugby as a 40-year-old and would join his longtime Munster and Ireland teammate Donncha O'Callaghan at the club.