Borussua dortmund brad is currently in 6th position, from the 3 remaining matches they actually still have a chance to be in the top 4, but what makes it difficult is their competitors who are not weak at all.
The 3 teams they will face, one of which is also a good team, namely Leverkusen. Honestly, I'm not so sure they can win that match, so I feel they won't be in the Champions League next season.