“For sale: 47,929-seat stadium. Work to be planned for a passage to 60,000 places. Date of construction: 1972. Renovated in 1998 and 2016. Price: to be determined. How much is the Parc des Princes worth? The question could become central after the recent remote exchange between PSG and the City of Paris, current owner of the Porte de Saint-Cloud enclosure.