I just posted this in the matchday thread, I'll repeat it here:
IF we win and Juventus wins or draws, we are through.
IF we win and Gladbachen win, we are at least through to the Europa League.
The first tiebreaker is head-to-head, then goal differential. So, we win tonight, we'll have 6 points against Sevilla, and the most points they could get is 9, which is what we would have.