In terms of the squad that PSG has, it is worthy of being one of the candidate clubs to win the Champions League, but to reach the podium of the Champions League champions, PSG must bring in a great coach.
When you are at the top of a league, you need to make a big mistake in order to lose that spot, because at the top, you are making so much money, and if you spend that wisely then you will stay at the top for a long time.
I think Real Madrid, Bayern Munich, PSG are going to win the league title in their own respective League. Actually, The English Premier League is going to be really hard to predict but there is a big possibility for Manchester City to win the title again as my prediction.
I don't think any of these teams are going to make so a big mistake that is going to cost them the league title. Any competition for PSG is nonexistent in League 1, And almost the same goes for Bayern Munich. In la Liga Real Madrid had some competition but seems the last season I don't think they need to worry.