 He made his debut for the club on 24 August in the opening game of the 2019–20 Serie A season, coming on as a substitute in the second half and scoring a goal in an eventual 4–3 home loss to Napoli.On 31 January 2020, Boateng joined Turkish Süper Lig club Beşiktaş on loan for the remainder of the 2019–20 season.Boateng holds a German passport, previously playing for the Germany national youth team.