Dortmund often prints a lot of good players and has a lot of money, but if they want to buy new players again, it seems they will do it when the transfer market opens, so far they have not provided any information about their new players and there have been no rumors circulating. Dortmund have lost again in their last 2 matches and this is very sad because they should have stayed in the top three of the standings.
Dortmund work to achieve it, they did not print or mint new players from the air and sell them at expensive prices.
In fact, Dortmund have good strategies to hunt for youth players and plans to use them, grow them up with very open chances in their team. The scout team of Dortmund is very productive and they discovered so many good youth players, then convinced the Sport director to buy these players at very cheap costs.
Moukoko is a very promising next rising star for Dortmund, after Jude Bellingham. However, if they want to win Bundesliga, they will have to keep their star players and buy some important star players to enhance their weaknesses. It is a risky strategy which can break Dortmund principle for their salary ceiling.