 At the beginning of the 2014–15 Top 14 season, Farrell joined French Top 14 side FC Grenoble, where Bernard Jackman, formerly of Connacht, Leinster and Ireland, was coach.Farrell made his debut against La Rochelle off the bench and made his first start against Oyonnax.On 24 January 2017, it was announced that Farrell would be joining Irish province Munster on a two-year contract, beginning at the conclusion of the 2016–17 season.