De Bruyne contract will be expired at the end of this season so without having to be sold automatically De Bruyne will leave Manchester City this summer and Guardiola has confirmed that this winter Manchester City will bought some players besides those players above i think Guardiola should be buy at least 1 striker as the substutition player of Haaland because i can see it that when Haaland unable to in form Manchester City don't have any good striker and indeed they have Phil Foden but his performance is decline and last season Manchester City has Julian Alvarez but unfortunately they sell him to Atletico Madrid
I agree with you, Man City cannot continue to expect Haaland to work hard up front. We also often see how Haaland becomes unhinged when he is pressured by the opponent's defense. In addition to the decline in performance that he could experience, injury is very likely to befall Haaland if he continues to get strong pressure in every game. Getting a striker with a sharpness that is not inferior to Haaland is also very important for Man City. They have quite a lot of matches in various competitions, so it will be very important to maintain the fitness of each player to maximize the team's performance. Man City has also felt that some of their players have been injured and that makes it difficult for the game to run as they expected.
Haaland thrives better when the full team is actively performing at their best. He is just a good finisher and not a fancy player. That's why when the pressure from opposing team becomes too heavy his performance for that very match starts retarding. Kelvin se Bruyne has been a big contribute factor to the City squard and Gaurdiolla would need to look out for his replacement in the coming transfer market.
Instead of getting a replacement for Haaland I think Gaurdiolla should focus on his wingers and central midfielders. If this positions are stable then then Haaland will be at his best again where all the need do is feed him with the ball at the right position and allow him perform his magic
We have seen how Man City played without Kevin De Bruyne when he was injured. He plays a very important role in the team. If he is not on the team, then Man City should have got a replacement. Maybe that will be their main priority.
Regarding Haaland, I just think Man City has a striker who can also be a team supporter. Maybe not as good as Haaland, but having a player like that who can replace in difficult situations will certainly help Man City in difficult situations.
Man City will solve the problem from the most important first, including finding a player who can replace Kevin De Bruyne's role.