In August 2016, Sherry underwent a surgical procedure on his back which ruled him out for 3–4 months. In July 2017, Sherry began a gradual reintroduction to on-field training following the back injury, which had kept him sidelined since May 2016. He made his return to rugby on 24 August 2017, when he was a replacement in Munster's 35–26 pre-season win against Worcester Warriors. On 1 September 2017, Sherry came off the bench against Benetton in Round 1 of the 2017–18 Pro14, making his return to competitive rugby. He signed a one-year contract extension with Munster in April 2018.