I do agree that it's too early to discuss it, but not like we are going to see any different teams fighting for it neither. I still say the same four big names and sometimes they will be a bit worse and sometimes they can be better but it will always be like this to me; City and Madrid as the best teams, even when Madrid lost Benzema, I still keep them at the top because this is their cup, they love to win it.
After those two, we have PSG and Bayern, one is the greatest team at Bundesliga and the other at ligue 1, so it's not going to be easy to beat City and Madrid, but it's possible. After these four there are like a dozen teams that can be good, but I seriously expect these four to fight for it, and I can say this without even seeing a single transfer, it's like that every year anyway.
Nowadays, I believe that football has become a little more unpredictable than it used to be. I would say that it is at least more unpredictable than it was in the past. I have always considered Real Madrid to be one of the best teams in the Champions League. Manchester City is also showing good form. Due to the fact that Manchester City is the current defending Champions League title holder right now, it is safe to say that they are the best team.
Honestly, I don't think that PSG is even close to their level, as far as I'm concerned. And if we talk about Barcelona I have to say that the Barcelona we have right now is not on track to win the Champions League.