It would be foolish to expect a better performance from Chelsea. Maybe the team's performance will stabilize a bit. But I don't think Chelsea deserve to be in the top four of the points table at the moment. This club has a lot of internal problems. The management of the club is not experienced and this is their first weakness.
However, this season too, Chelsea will form a squad with a new coach. Looking forward to seeing if Enzo Maresca will make Chelsea stronger again. But the Chelsea team is in a very bad position right now. Rapid improvement is not possible for this team. But if Maresca has long term plan then maybe Chelsea's overall situation will change slowly and we will see stable performance from Chelsea.
Chelsea have just played one game. I think it is too early to say Chelsea will not perform well this season again. As for me, changing the squad and forming another one does not mean much to me, and I don't think it can stop a team from performing well if the coach is experienced and tactical. All they need is proper coaching, and I am sure the players will adapt. In fact, watching the match against Manchester City, I don't think they played that badly, but the issue is that they don't have a good striker. Chelsea had good chances to score, but they just wasted them. I still believe that Chelsea's performance may be better than last season's, but let's see what will happen in their first 10 matches before we start judging them.
Looking at the squad in the Chelsea team, it is very certain that the team is not ready to perform well this season not minding the number of players they have signed this season so far, from their performance against Manchester City, the Chelsea team may not have played badly but you just confirmed their inability to convert their chances to score goals as a result of a good finisher. Chelsea just started the new season losing against Manchester City at home may be until they lose up to 10 matches since they are playing without a striker the management will understand that the team is having a bad season already.