Paris Saint-Germain have completed the permanent signing of right-back Serge Aurier from Toulouse on a four-year deal.
The 22-year-old has been on loan at the Ligue 1 champions since July 2014, making 14 appearances for the club in all competitions.
His performances have impressed PSG enough to trigger the option to sign him on a permanent basis, with his new deal keeping him at the club until June 2019.
"Serge Aurier is a young player with enormous potential. Like his young teammates, he represents the future of Paris Saint-Germain," president Nasser Al-Khelaifi told the club's official website.
"It was logical that we trigger the option to buy. The club's project continues, especially our policy of conserving our best young players. Serge will become an essential element of the team in the future."
Aurier was also a member of the Ivory Coast squad during the 2014 World Cup and the Africa Cup of Nations earlier this year.
