In late 2016, it was widely rumoured – and later confirmed in January 2017 – that Radradra had signed a one-year deal for French Top 14 club Toulon. The move would not take place until after the 2017 NRL season. Radradra made his debut for Toulon in round 7 of the 2017–18 Top 14 season against Bordeaux. Radradra scored his first try for the club in the European Rugby Champions Cup with his first touch of the game and just 62 seconds into the match on 21 October 2017, against Italian club Benetton. This followed his Toulon debut a fortnight in advance.