Last season when De Bruyne was injured, it was clear that Man City's game had decreased, especially in terms of attacking effectiveness. Even though there are Doku and Foden, De Bruyne presence has not been replaced on the field as one of the best midfielders who is able to create goal opportunities for his friends. Man City is very aware that if they lose De Bruyne next season there will be instability in the midfield. Pep Guardiola is definitely trying to ensure important players like De Bruyne stay a little longer. The 2025 season is a bitter reality because it is not only De Bruyne who is certain to leave, Pep Guardiola also has the same opportunity to leave Man City.
Nothing to worry, Manchester City always sign the right coach since 2009, so I believe they will find the right coach again in case Pep leave them. There's no problem with Manchester City, they're almost a perfect team and the team is rich too, so they can get any player that they want.
Manchester City doesn't like Manchester United where Manchester United is really struggling after Alex Ferguson and Cristiano Ronaldo left them.
Pep Guardiola and De Bruyne have 1 year remaining on their contracts with Manchester City and until now there has been no sign that either of them will extend a new contract, Guardiola seems to be starting to think about leaving Manchester City because currently he has won all the domestic titles and the Champions League with Manchester City, apart from that Guardiola has also broken many records including becoming the first coach in the English league to be able to win the English league trophy 4 seasons in a row, so what else should he be looking for now in the Premier League?
In my opinion, the possibility of Guardiola leaving is very big and Manchester City must be able to anticipate this by trying to look at new coach that might be available later.
Meanwhile, whether De Bruyne will stay at Manchester City next season or not will really depend on the amount of salary offered and also the guarantee of playing in the future, If Manchester City were to cut De Bruyne salary just because of his old of course he will choose to leave for other team, However, even though Manchester city currently has no intention of selling De Bruyne, but I am sure that he will probably move to Arabia to get a better salary in the future.