Can PSG do that with their current condition, yes for Ligue 1 it still shows that PSG is the strongest and has dominated for several years but UCL is competition that is followed by several strong team from various League, PSG with various great players alone cannot win UCL and moreover now with conditions like this it will clearly be more difficult for PSG to achieve that success.
Tomorrow they will face Liverpool in the first leg and for the last 16 if PSG can knock Liverpool out it is already the best achievement because so far Liverpool is the strongest and most consistent team, but if in this first leg PSG cannot win then for the second leg PSG will definitely be lost and they will be eliminated.
The only advantage that I can see from Paris Saint Germain in this match is that they will play as the host. So with that advantage they can use it to be able to win from Liverpool to make them more comfortable in the second leg later. However, the problem is that the opponent they will face this time is not an easy opponent at all. They are the team with the best statistics in the Champions League in the first phase. Although that is not a guarantee, they still have the capital that can increase their confidence.