As we all know, Barcelona was very interested in the greater Paris midfielder Verratti, and once privately contacted Verratti, hoping to instigate the player to leave Greater Paris to join Barca. But in the end, Verratti chose to renew his contract with Paris, which failed to make Barca wish.

But This operation of Barca is a complete offense to The Greater Paris. Later, the two teams met in the Champions League knockout rounds, and the good situation of 4-0 in the first leg of Paris did not help them qualify. They lost 6-1 to Barca at Camp Nou in the second leg, a game that became a humiliating battle for Greater Paris.
Paris, backed by a Qatari consortium, has long been plotting revenge against Barca, so in the summer of 2017, they took away Barca's Brazilian genius, Crown Prince Neymar of Camp Nou, with a sky-high penalty of 220 million yuan. Since then, Barca's overall strength has deteriorated, and their performance in European competition has been criticized.
This summer, Barca refused to extend the Argentine's contract on the grounds that they could not afford Messi's salary. Paris took advantage of the trend to sign Messi, causing a great sensation. Now, according to journalist Ekrem Konur, Paris is also targeting Barca's midfielder Frankie De Jong. They hope to bring in the Dutch young talent next summer to strengthen the team's midfield.
Paris is less satisfied with the performance of another Dutch midfielder, Wijnaldum, who joined the team this summer, and they hope to bring in a younger De Jong to replace Wijnaldum. And Wijnaldum is exactly what Paris "cut off" from Barca this summer, which is very helpless for Barca itself. Now they still have to poach the midfield core of the Catalan giants, and this wave of retaliation is expected to make Barca very uncomfortable.
Grand Paris wanted to sell Wijnaldum in the winter window, and they were very anxious to get De Jong. Now that Barca are short of major generals, the new manager Xavi is still more than enough to reinvigorate. If De Jong is poached by Paris, Xavi's path to leading Barca back to the top will only be more difficult.
As for De Jong himself, he came out of Ajax to build a career in the bigger league, and he probably didn't want to accompany Barca to his demise. If Greater Paris can match his annual salary, I believe he himself is willing to go.