Players with contracts, particularly of two years or more (which Ferran and Ter Stegen have) don't have to go anywhere - that's what contracts are for. They may, or may not, choose to leave but ultimately, it's up to them. Two players who were pressured by the club (and a big section of the fan base) to do just that in recent seasons chose not to go and it turned out to be a good decision, not only for them but for Barca. They were Raphinha and FDJ.

From Barca News: Barcelona overtake Real Madrid in historic La Liga record after a tremendous season Barcelona [have become] the highest scorer of La Liga of all time. Thanks to a stunning return of 102 goals this season, Barcelona have now scored 6,579 goals in La Liga, surpassing Real Madrid’s tally of 6,561 by 18 goals. At the start of the campaign, Madrid were ahead by six goals (6,483 to 6,477), but an electric season from Barça’s frontline turned the tide. This season also saw the Clasico rivalry reach a new balance, with Barça winning all four encounters to level the all-time win record at 105-105.