Last season, Barcelona also experienced problems (even with those levers) with registering players, but in the end they resolved this issue, I think this season their financial situation is a little less acute, so they will sort it out here too. But this is provided that management/Flick do not decide that they need to compete with Real and will not make major transfers.
In terms of pressure on the transfer market, Saudi Arabia remains a major factor. If the KDB receives an offer to earn his salary for the previous 15 years in two years, then this greatly changes the behavior of the players.
Yes and Barcelona has to do that because trying to keep up with recruiting new players like Real Madrid will make their finances even more problematic.
Barcelona has to solve the problems one by one now and maybe management/Flick needs to make adjustments to the players for next season.
Saudi Arabia is a mecca for some footballers for senior players and they will choose to join there with an unlimited salary. Interestingly, Saudi Arabia has better financial capabilities so they can attract whoever they want.