Around 5,000 fans saw Paris Saint-Germain beat Le Havre in a friendly, with fans allowed into stadiums for the first time since early March.
Presnel Kimpembe, who has become a key part of Paris Saint-Germain's defence, has extended his contract by a year to 2024.
The 2020-21 Ligue 1 season will begin on August 22, with Paris Saint-Germain starting their quest for another title at home to Metz.
RB Leipzig confirmed their second signing for the new season – Benjamin Henrichs – following Hwang Hee-chan's arrival.
Niels Nkounkou had reportedly drawn Juventus' interest, but it is Everton who have signed the youngster on a free transfer from Marseille.
Paris Saint-Germain fell behind at Lyon but hit back impressively, scoring four second-half goals to knock out their Ligue 1 rivals.