Dortmund can produce talented players. But naturally talented players will not want to stay with Dortmund. Because this team has no hope of winning the title. They do not form a squad fit to win the title. Lewandowski won several Bundesliga titles with Bayern Munich, La Liga with Barcelona. Haaland won the Champions League and Premier League titles in his first season with Manchester City. Had they stayed with Dortmund, they would never have won so many titles. This is why Dortmund cannot keep talented players with their squad even if they want to. So almost every season they sell the best player in the squad for a smart price. They are financially very profitable.
Borrusia Dortmund board are basically the ones that are distracting and making it to be a struggle for the team to win major trophies in bundesliga competition. I'm sick and tire of the whole system because it's really messed up and will take a long period of time before things finally bounces back to the current best condition. I would suggests an open source for the Dortmund fans, they should match up and go to Signal-Iduna-Park stadium and protests vividly because things are definitely blowing out of proportion. Dortmund was in possession of talented players but they constantly triggered the sell clause on every possible talents which would have upgraded the team's standard of game.