2. Lewandowski 33.5M Euros
3. Kylian Mbappe 31.2M Euros
4. David Alaba 22.5M Euros
5. Jan Oblak 20.8 37.5M Euros
Lewandowski is also worth selling because he is no longer good in terms of productivity this season.
Ideally, De Jong would be sold for more than 37.5 million Euros, which could provide many options for Barcelona to look for other players, but it seems difficult. De Jong was indeed proposed to by several European teams, especially Man United, but because De Jong did not want his salary to be reduced and Barcelona debt to him was still not paid off, this was a strong reason for him to stay. There is no guarantee that Barcelona will be able to compete with Real Madrid next season. Therefore, I prefer to replace Rival Barcelona with Girona or Atletico Madrid. It would be inappropriate if Real Madrid were his current rival, plus recently Real Madrid broke a new record as a club with revenues of 1 billion Euros, the only club in football history.
But De Jong's reason for staying at Barcelona might make sense because he doesn't want a salary that hasn't been paid even better to stay than to leave this is not a matter of small money for him.
The rivalry will still be with Barcelona it just won't be as intense as it used to be where teams attack each other, I feel in an El Clasico match it will still be fierce but the winner will still be Real Madrid, because there is no doubt about their ability on the pitch.