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.
Borrusia Dortmund keep repeating this mistake that's on the verge of declining their performance to at least more competitive average club. I was just hoping Dortmund would derived more interest in keeping their talents, who knows by today, alot of things about Bundesliga would be pointed and concentrated by Bayern Munich and only them alone. Borrusia Dortmund making some cool discreet cash from the selling of their talented young players. Dortmund are more interested in making their source remains more stable and reliable, and definitely not the profits from lifting significant titles.
Yes, Dortmund always sells their stars. Apart from Bellingham, it will be their regret. I also want to mention Erling Haaland. 51 million pounds, Man City made one of the century's bargains, of the century, an actual robbery. Dortmund is still making that mistake.
Personally, I think they still see the potential of those players. But financially, they are in need. Dortmund forced them to sell their good players. Perhaps they have fewer financial sponsors than the Premier League or La Liga.