The 21-year-old dutchman has been highly coveted among storklubbarna around in Europe after having broken through in Ajax and also taken place in the national team last year, and will join Barcelona in the summer.
The Spanish club said on their website that transfersumman amounts to € 75 million, corresponding to sek 768 million Swedish kronor, plus up to a further eur 11 million based on various criteria.
De Jong has signed on a season that stretches over the season 2023-2024.
the Midfielder is thus in the footsteps of Barcelonaikonen Johan Cruyff, who swapped Ajax against Catalonia in 1973.