Paris Saint-Germain's plans to expand the Parc des Princes to 70,000 capacity has hit a stumbling block with architectural design at the centre of discussion.

The Parc des Princes currently has a capacity of around 48,000, but PSG are considering expanding it to accommodate 70,000 spectators.

The Parc des Princes is owned by the City of Paris, and PSG's plans to expand the stadium are tied to the club's efforts to secure ownership of the venue.

The proposed changes also raise architectural concerns because Roger Taillibert's family argues that alterations affecting the integrity of his design require its involvement and approval.

According to Le Parisien, PSG have consulted architectural firm Populous about a proposal to modify the Parc des Princes roof structure to accommodate the planned expansion.

However, the proposal faces opposition from Sophie Taillibert, who has raised concerns that the changes could compromise the architectural integrity of her father's work.

Why the Taillibert Family Opposes PSG's Expansion Plans

Following several meetings with PSG, Sophie Taillibert, daughter of the late architect Roger Taillibert, has objected to the club's proposed changes to the stadium's design.

She stressed the importance of preserving her father's legacy above any developmental plans.

“The proposed modifications are likely to compromise the architectural integrity of the building,” Taillibert told Le Parisien.

“We all want PSG to remain at the Parc des Princes, and we therefore share common ground. But my priority remains the preservation of my father's legacy.

“My opposition is not a whim. As the guardian of my father's legacy, I have a moral obligation to be consistent and respect his decisions concerning his work.

“I wouldn't say our exchanges are fruitful because we are still far from having found a solution that suits both parties, but they are constructive."

The next meeting concerning the Parc des Princes project is scheduled for October 16, when discussions are expected to continue.

What Are PSG's Alternatives to Expanding the Parc des Princes?

If an agreement on expanding the Parc des Princes cannot be reached, PSG are also assessing alternative sites for a new stadium.

Poissy has proposed a sports complex on the former Stellantis site, including an 80,000-seat stadium and a multi-purpose arena with a capacity of 20,000.

The Parisians have yet to announce a final decision, with recent reporting indicating that the club hopes to make a choice before the end of 2026.