Haaland and De bruyne have excellent chemistry. De bruyne is an excellent midfielder . Apart from assisting scores, he is also capable of scoring. With De bruyne in the squad we see a better performance from Haaland. In the last few matches we don't see a better performance from Haaland.
Manchester city's performance is still somewhat erratic. The main reason for this is that their midfield key players are not in the squad. Because of this guardiola has to change his match strategy. Gundagon, De bruyne and bernardo silva were Manchester city's mainstays last season. Silva and De Bruyne have been absent this season due to injuries and Gundagon has left the team. With Silva and De Bruyne in the squad, City's performance is likely to be more stable.
These two players have a central role in the strategy that Pep implements with his system. that's why, these two players have very good chemistry. but recently, Pep has developed another strategy IMO. now, every player is more involved when it comes to scoring goals, City is not just relying on Haaland and De Bruyne. we can even refer to the crucial match in the champions league last season, how City faced strong teams like against Madrid and Bayern.
At the beginning of this season City had a little problem with several of its players, De Buryne was hit by an injury, Bernardo Silva also had to be absent in the last two matches played by City. apart from that, Pep did not apply his flagship formation pattern. the departure of Gundohan, Mahrez, made Pep choose another option. that's why, it looks like City has decreased in performance. Naturally, because some of the players had to be absent in several matches. maybe, if Bernardo Silva, Stones, has been confirmed fit. Pep can implement the system the way he wants. after all the Champions League competition still has a time lag before it rolls out, Pep can give their young players the opportunity to grow even more. what is certain, in this competition City remains one of the favorite teams.