Lyon have announced the signing of a French U21 international defender from Paris Saint-Germain, as they look to improve their defensive system ahead of the new season.

The defender, who has been playing for the U21 team at PSG, has agreed terms on a deal with Lyon and will join the club in January. He is expected to make an immediate impact on the team, as he brings with him a wealth of experience and a strong defensive presence.

As part of the agreement, Lyon have also agreed to pay a fee for the defender's services, which has not yet been disclosed. However, it is understood that the fee is likely to be in the region of €5 million, with further payments made over time.

The signing of this player is seen as a significant boost for Lyon's defensive department, as they look to strengthen their squad ahead of the new season. With the departure of several key players during the January transfer window, Lyon needed to add quality defenders to their ranks to ensure they can compete at the top level.

This new addition is expected to help Lyon to build a solid defensive unit, which could give them a major advantage in the league. The defender is known for his excellent defending skills and his ability to read the game, making him an ideal fit for Lyon's defensive system.

Overall, the signing of this defender is a positive move for Lyon, as it shows their commitment to building a strong squad ahead of the new season. It remains to be seen how well he will perform in his new role, but with his talent and experience, there is every chance that he will become an important member of the team.