Regarding the money spent so far, we know PSG for the money they usually spend on their palyer and they usually buy superstar players in each season but this time they made a good amount of money selling the players they had.
PSG spent 300m in this summer for players but they also earned 100m. On the other hand selling players like Messi, Verratti, and Neymar was a good step for them to earn more money.
Although psg did not earn much money from the transfer of Lionel Messi and Verratti, PSG earned a lot of money from the transfer of Neymar. PSG can easily buy a quality player from Europe for the amount of money PSG received as Neymar's transfer fee. PSG will not receive any transfer fee for the transfer of Mbappe, despite receiving transfer fees from those who left the club this season. Mbappe only wants to leave the club as a free agent member, Mbappe without the club as a free agent member means a big loss for PSG because PSG is not able to earn any money from the transfer of Mbappe where there is a lot of money to be made from the transfer of a player like Mbappe. PSG does not want Mbappe to leave, but if Mbappe leaves, then PSG will have to make a new plan and organize the team.
I think the PSG team is not too concerned about the money from transfers because this team has quite strong finances, it's just that they need quality players and even PSG is doing many things to be able to keep Mbappe, but I think the stability of this team continues to decline and it will be difficult. for them to retain or bring in current star players.
There are so many things that PSG has to fix, in fact they have to be able to make this team more solid without having to always recruit star players or expensive players and there are still a lot of processes that PSG needs to go through to be able to excel on the European stage.
PSG is a very strong club financially but no matter how financially strong PSG is, they never want to lose money on player transfers. If a player moves to another club, the fee PSG receives for the player's transfer is a profit and PSG will never give it up. PSG spend huge amount of money to buy world class stars but due to their main focus on only world class stars they forget that world class attacking line up needs world class defense and midfield line up. If they hadn't forgotten this, they would never have bought world-class stars, they would have bought world-class stars and quality midfielders and defenders to make them a complete team. PSG is a team that has always failed in this perfection.