Borussia Dortmund for a fact has been a traditional club in the German Bundesliga and German football in general in the last two decade of my football experience and must be respected for whatever the decision of the club must have taken in other to keep the club running.
However football is a game of passion whereby a club is judged not by how much they earn in how they get players with low price tags, develop them and sell them with huge prices thereby making good amount of profits, instead a club is believed to be successful when the said club is always winning trophies and that's the reward the passionate fans of the said clubs gets for supporting the club.
Borussia Dortmund must change their transfer attitude and allow their star players to stay with the club and help the club win trophies
I agree that Dortmund must change their transfer attitude and keep their key players, to get the title and make fans happy. Moreover, when they win the UCL I think they will not only win the title, but also have money because maybe they will get a big sponsor. Instead of developing players and then on the table they sell them. That's right, it's not a good attitude because if they can keep players for several seasons maybe the selling price will also be high, and they can earn more money later.