well, in the end this season Dortmund has appeared unstable and its performance has greatly decreased since selling reliable players like Bellingham Dortmund must try to build new talents again to be able to immediately improve stable performance this season because even if they do not have reliable players at least Dortmund should not have a decline performance that has been very clear in the last few periods of matches and currently Dortmund has to compete in the UCL preliminary round which is a pressure for Dortmund to improve performance otherwise this team will lose another chance.
and to be honest even so I'm still not sure whether Dortmund will be able to compete with other teams in group F while Dortmund will have to compete with PSG, Milan and Newcastle who are currently in a very strong state.
Dortmund has been like that for a long time, they will never care about a decline in performance, and because no other Bundeliga team has risen so they remain safe at the top of the standings (below Bayern) because there is no significant competition from other teams, so I think this season it will remain like that.
And regarding the competition in the UCL, Dortmund will join the most difficult group with Newcastle, PSG and AC Milan. I think with Dortmund's current performance it seems like there is no chance for them to qualify from this group.
The worst thing is done by Dortmund where they always sell their star players, such as releasing Bellingham to Real Madrid. That's why their performance will not always appear at its best in every season. In fact, I think they will not be able to compete at the top this season because other teams are stronger than them, such as Leverkusen and Leipzig. So, this season we have seen Dortmund having difficulty balancing their game because in the previous two matches they failed to get full points. Maybe Bellingham departure will have a big impact on their performance this season. Well, if we talk about the UCL, Dortmund certainly have quite tough opponents in the group phase and I'm sure big obstacles will make it difficult for them to provide competition to qualify for the next round.
It is so bad that Dortmund do not even care if selling their players will make the team to be in a bad form, they just keep on selling their players just to generate funds. If Dortmund was never interested in selling their players Dortmund would have been a great team not just in Bundesliga but also in the Champions league. Bellingham is a great player that would have been very helpful for Dortmund but they do not think about keeping players to make the performance of the team good, Dortmund agenda is to sell their players for a huge amount and this has always affected the performance of the team.