 He returned from the injury on 6 January 2018, starting in Munster's 39–13 win against Connacht.A knee injury Farrell suffered while with the Ireland squad during the 2018 Six Nations required surgery, and subsequently ruled him out of the remainder of the 2017–18 season.He signed a three-year contract extension with Munster in October 2018, a deal that will see Farrell remain with the province until at least June 2022.