This is a big chance for PSG its now or never for them. They have the quality to win it this time and they dont have an opponent that is better then them. I think its 60/40% for PSG to win against Inter. But PSG plays a little similar to Barcelona and Inter will try again to take advantage of those counter attacks to try and score
PSG is expected to win according to different bookies. The mean odds for PSG are 2.25 and for Inter Milan are around 3.4. For a draw, the odds are around 3.3.
Obviously these are mean odds so the possibilities to find a better one in some bookies do exists.
I support PSG because it is a long waiting achievement and winning 3 trophies will be a great and unforgettable season for them.