Currently, there is nothing wrong with the squad. The current players are what the team still need to defend their Laliga and Champions league title next season. No one to be removed and not even one to bring in unless they want to have a replacement for some of the players because of injuries or any future casualties.
Actually I believe there is something serious with the squad now. In the defense line I mean. Because like I said before, Alaba is still injured and we don't know when he will be back. Nacho has also left the team. They can't do well with only Militao and Rüdiger. They will need to bring some new CBs to increase the squad depth in this area.
Real Madrid even looks like they are aiming to bring some competition for the starting lineup. If they sign Saliba I expect him to take Militao's place. Because Militao has also faced important injuries.