I think City's current strength lies in Kevin de Bruyne and Haaland. These two players were key to City's game in achieving the treble winner last season. We could see at the start of the season when KDB was injured how City's game was below our expectations. So KDB's return is the good news that fans have been waiting for. I hope KDB can play with Haaland again when their condition is 100%. Currently they are only 2 points behind Liverpool in first place and with many games still remaining I think City will again have a big chance to become back-to-back EPL champions this season.
City played for half a season without De Bruyne and in the last games Haaland was injured, but this did not prevent City from reaching the Champions League playoffs and being a few points away from Liverpool in the Premier League. Of course these are very important players for City, but Guardiola does not build the game around one or a few players, he builds a team in which every player can be replaced and the team continues to win. The return of De Bruyne is very important, I can see how Guardiola is happy about it, so such a player will definitely strengthen the team.