Before Real Madrid won the UEFA Chiampions league back to back,no body would have believe it will be possible but Real Madrid achieved it and I believe in the world of football, nothing is impossible. Considering the performance of PSG in the last concluded UEFA Chiampions league and how strong the team currently is,I think PSG can still achieved the same records like Real Madrid by winning the Chiampions league back -back. The PSG team are so in form than any other teams currently. Coach Enrique still has many titles and trophies to win for PSG and will achieve a lot of it easily because of how in form his squad is and how far there are ready to go in winning trophies for the records.
I am not that confident with PSG winning again UEFA Champions League. They are certainly candidate to play advanced stages but if ever they face a classic top team playing with all its main players which are in good form, the result might be bad for PSG. By these teams I mean Real Madrid, Manchester City, Barcelona, Liverpool, Bayern Munich...
Fluctuations between a season and another is so violent in these teams and indeed Real Madrid is another story that seems hard to repeat since that team has the ability to build a good squad of top players and having good substitutes. Well that was before.