As Paris Saint-Germain prepared a party atmosphere to present their squad to fans at the Parc des Princes, few expected to hear whistles and boos. Yet there were some and they were directed at Kylian Mbappe, as a section of supporters made their feelings clear on the Frenchman's reluctance to sign a new contract with the club.
Lionel Messi was yet to be presented as the unexpected reaction came from the stands, making the situation regarding Mbappe's future even more tense.
Those watching on from the boardroom may take note as they ponder whether or not to cash in on the youngster for 150 million euros this summer, or allow him to leave for free next summer.
Real Madrid's position is very clear and they are ready to negotiate and make an offer, expecting PSG to be open to selling to balance the books after the signing of Messi.
The Spanish club do not want to create hostility with the French side, keen to keep a good relationship with them, but they will push for what is a very complicated deal.
PSG don't like selling
Both coach Mauricio Pochettino and president Nasser Al-Khelaifi have insisted that Mbappe is going nowhere, but finances and the reaction of fans could make them reconsider.
PSG are not a side who sell many players unwillingly, the last being Ronaldinho in 2004.
Since then, Marco Verratti, Edinson Cavani and Neymar have all been linked with moves away but they never materialised. Of the trio, only the Uruguayan has since left after running down his contract in Paris.