Kylian Mbappe Biography – Affair, In Relation, Ethnicity, Nationality, Salary, Net Worth, Height | Who is Kylian Mbappe? Kylian Mbappe is a professional footballer playing forward for the team, Paris Saint-Germain after transfer from Monaco on loan. He is a second most expensive player in the world after Neymar Jr. His fee is estimated to be €180 million.