Dortmund beating Leverkusen was a step ahead of them ending top 4 in the league left with 1 match to determine where they end up. If Dortmund can successfully win Holstein Kiel in the last game of this season what they wish for is SC Freiburg to lose or draw, SC Freiburg will be playing against Eintracht Frankfurt who are 3rd place also competing in this final game to qualify for Champions League, they can't go easy on SC Freiburg, that last game will determine for this three teams who makes it out of the leading top 4.
Dortmund will want Frankfurt to win. That would mean Dortmund goes to fourth place and goes to UCL, and that shows Nuri Sahin was the problem because they were like 10th and now they are fighting for fourth spot. If they can do that then they are going to be happy with fourth place.
If they can do a good job, they won't matter that much and would be happy to do it, we need to make sure that they can do what they are allowed to do and they should focus on making this a reality. If they can reach fourth place, that would be lovely. On the other hand, if Frankfurt loses, that would mean, there is a very low chance Dortmund will be in fourth place, so at least a tie in that game is a lot better and they should reach that level. Freiburg could win, and they have to win for their sake.