Today is the day for Dortmund to compete in the Champions League finale. As a reminder if Dortmund manage to be champions tonight this will help Frankfurt also gain a Champions League spot.

I respect Frankfurt's run throughout the season of course. But considering the huge gap between Dortmund and them in the standings this would be a really free quota for Frankfurt there.

However this isn't the highest probability to happen today though. Real Madrid are expected to be quite dominant. Terzic will need to play patiently and look for some chances by counter-attacks.
If it doesn't happen then Frankfurt wouldn't make it a big problem. They are already going to the Europa League at least.