 His maiden appearance in Ligue 1 occurred on 18 November, in a 0–3 home loss against AS Monaco FC.Following his team's relegation, Cafú joined FC Metz also in the French top division on 1 August 2017, penning a three-year deal for an undisclosed fee.He made his league debut 17 days later, playing the full 90 minutes in a 0–1 home defeat to title holders Monaco.