 This confirmation came exactly a year after Brighton secured their safety in the 2017–18 season.On the opening day of the 2019–20 season, Pröpper set up Florin Andone's goal in a match where Brighton recorded their joint biggest away victory in the Premier League, beating Watford 3–0.Pröpper has represented the Netherlands U-19 team in the qualification rounds for the 2010 UEFA European Under-19 Championship.