From what I've seen so far, the title will be between us and Citeh. Yes, Chelsea are playing well and they have had the hardest fixtures so far but I don't think their defense is as strong and if Morata gets injured they will struggle to score goals. The 0-4 win against Stoke was very flattering and it could easily have been a 2-2 draw. The only difference was Stoke missed their chances and Chelsea were very clinical with Morata. I still think Lukaku is slightly better than Morata. Morata has the skill and technique while Lukaku has the pace and stamina and has more experience which is what you need in the PL.
To Citeh now, De Bruyne is their main playmaker. He is the engine in their midfield and if teams can stop him, they will stop half of City's attacks coming through. They are definitely the best attacking side in the PL and we come nowhere near them but our defense and goalkeeper are wayy better than them. Ultimately it'll come down to whether their stronger and upgraded attack can compensate for their alright defense. It didn't work out last season and I think teams will soon figure this out and sit back and attack them on the counter.
For Liverpool, I do not think they will be in the top 4 this season. Their attack is PS4 like, but equally they are very poor in defense and they also don't have a Striker who will score 20+ goals in the league like the other top teams do.
For us, I think we have the best defense and the best counter attacking side in the PL. I know some of us fans don't want Zlatan back now, but we'll definitely start needing him if Lukaku gets injured or tired and burned out after playing 2 games every week. He'll definitely strengthen us, and I think if we can steer clear of injuries we can definitely be challenging for the title come April. I do think City have the better chance, but I wouldn't count us out.