PSG has 99% chance to win and move to the round of 16.
What are the odds of Man United and RB Leipzig draw? It's pretty low but that's what I think MU is going for. The problem is they don't have a solid defense to ward of RBL attacks since they've conceded goals in their previous matches. MU will advance while RBL will be in Europa League if this happens. Both may even qualify in the rare chance that PSG loses.
Leipzig 2.30
X 3.8
ManU 2.80
ManU will concede goals, this will be a great match. ManU might try to park the bus to keep the goal clean, but Leipzig will be putting some major pressure and should be in attack mode in an aggresive way, looking to score early and win this game.
The over option would also be a good option in my opinion, but I can also see ManU not attacking but the concentration will be on the defensive side.