I have an assumption that in the match Man City will most likely win and the worst results will end in a draw.
Maybe this is a little unreasonable but for me Man City deserves to defeat PSG on the grounds that Man City is still strong enough to defeat PSG who is not too experienced.
So most likely there are only 2 possibilities and PSG cannot do much unless it will only hold a draw.
I understand that you think Manchester City is very good and it is true that they have very strong team. But we should also remember that Paris Saint Germain is also one of best teams with very skilled players. Even though Manchester City has more experience which might help them little PSG players are very talented and work well together so we should not think they can not win. It is possible game could end in draw but I also think PSG has good chance of winning. Game is going to be very exciting and competitive.