Yes, if the target is to be in the top four of the Bundesliga it is still possible, because in the Bundesliga there are only two very dominant teams like Bayern Munich and Dortmund. That leaves Frankfurt with a chance to be third or fourth, but expecting to win the title is like a tough hope. Indeed, it never hurts to have high expectations but we can consider it in a more realistic way. Because there are still many better teams than Frankfurt playing in European tournaments, especially in the Champions League which on several occasions remained difficult and failed to win the title.
I think they should have high Expectations because they played really well in the Europa League and they have set the standards really high for themselves. I believe they will be starting to believe in themselves from now on and try to play better in their own respective League. and I also believe that their manager is going to help them out with some good transfers and some necessary changes in the squad.