Nasser Al-Khelaïfi and PSG tried to retain him.
But unlike Kylian Mbappé, who re-signed on Saturday, their efforts were not enough.
Jean-Martial Ribes, director of communication for the club since September 2017, is leaving.
The end of an era since he was very active from the takeover process in 2011 with the communication department of Qatar Sports Investment.
This close friend of President NAK then played a leading role with the PSG Ultras, who returned to the Parc des Princes in October 2016 and now settled in the Auteuil bend.
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He resigned in early March and is leaving for personal reasons.
He became communications director for the champagne brand Moët et Chandon, owned by the LVMH group (which also owns Le Parisien-Aujourd'hui in France).