Looking at the results obtained by Eintracht Frankfurt some time ago, where they often get draws compared to wins, and in the next match Freiburg will appear as the host, then most likely this match will also end in a draw. And if the match ends in a draw, then Borussia Dornund manages to beat Hostein Kiel at Sigan Iduna Park, then Dortmund will get its place in the top 4 by shifting Friburg.
Another scenario, if at the end of the match Freiburg manages to get 3 points, the possibility for Borussia Dortmund to finish in the top 4 is still there, as long as in the match against Hostein Kiel, Dortmund manages to win with a landslide score of at least 3-0. because even though the points obtained will be the same as the points obtained by Frankfurt, Borussia Dortmund could shift Frankfurt's position through goal difference.
Exactly, that's just the analysis of the game between these three teams, Frankfurt, Frieburg and Borussia Dortmund. The good thing for Dortmund is that, the two teams that in third and fourth position is playing against each other and whatever the outcome of their game is, it's in favour of Dortmund so long as they win their own game by at least 3 goals. If Frankfurt loses, their goal difference will reduce too because currently they are 3 goals ahead of Dortmund and any goal they concede reduces theirs and any goal Dortmund scores, increase theirs. So long as Dortmund wins with at least 3 goals, the result of the other two teams won't matter again. I now finally realise this.