Maybe PSG have a really difficult job ahead to do but it is still not impossible for them to advance to next stage either. They can eliminate Bayern Munich once again just as they did in the past. Even if we don't watch Neymar in the second leg Mbappe and Messi would still be enough for PSG to fight hard. These stars are making a really good duo and we have seen many examples of it.
I will be expecting the same effort in this game as well. In that case PSG can score first and make the matchup more interesting. I think PSG can eliminate them by penalties at worst.
So your hope is only Mbappe and Messi?
Probably "11" by Deutche Sport: Bayern: Sommer, Upamecano, de Ligt, Cancelo, Davies, Kimmich, Goretzka, Coman, Musiala, Muller/Sane , Chupo/Mane. (Depends on this day form after small injured Muller and Sane.)
PSG: Donnaruma, Marquinios, Ramos, Danilo, Hakimi, Veratti, Nuno M, Vithinia, Fabian, Messi, Mbappe.
For me right now is 60-40 for Bayern, with Stuttgart they played on 60-70%. PSG last time of course maybe not played on 100%, but losing goal like with last Uber Eats match by Donnaruma is not the best sign.