Plenty of reports in recent weeks have alleged that Neymar wants out of the Ligue 1 giants already, and gossip columns have suggested that Real president Florentino Perez still wants to bring him to Spain's capital even five years later.
"Being in Madrid would make it easier to win the Ballon d'Or", Perez is quoted as saying by Marca.
"Mbappé is 18 years old, let's let him develop and see where it comes from; we have the best players".
Sonda's claim adds further controversy to the odd nature of Neymar's transfer from hometown club Santos to Barcelona in May 2013, and adds even more weight to Sonda's previous quotes describing Neymar's family as "traitors" that he made earlier this year.
Messi and Ronaldo have now won the last ten Ballons d'Or between them. No player has ever won the award while representing PSG - although George Weah and Ronaldinho have done so after leaving the Parc des Princes.
Neymar, 25, joined PSG from Barcelona in a €222 million deal just last summer, but that has not stopped speculation that the Brazil global could join Madrid, with club captain Sergio Ramos and worldwide teammate Casemiro having both made clear they would welcome his arrival.
However, the Portugal captain, who will travel to Russian Federation next year in search of World Cup glory after winning last year's European Championship, is not contented.
Madrid had organised for some of the club's past Ballon d'Or winners, including Ronaldo Nazario and Kaka, to be at Thursday evening's ceremony at the Eiffel Tower.
Ronaldo won the award for his role in Real's phenomenal 2016/17 season, in which they pipped Barcelona to the La Liga title and became the first European champions to retain their crown in the Champions League era.
I feel good this season and well see what we win at the end of the year.. "Surely I will be".