Bayern have dominated the Bundesliga for so long. For Dormund to win this season, their squad have to be strong enough to withstand Bayern. Dormund have only won the Bundesliga title 5 times, while Bayern have won the title 30 times. Haaland alone can't make them win the Bundesliga this season, they probably need a strong and cooperative squad.
Bayern Munich reigns in the Bundesliga every season. But I think Dortmund will fight hard for the title with them next season. The Dortmund team may not have sold Haaland for this. Because they want to win a title. Haaland played well but Dortmund's performance was not stable. However, the road to victory for Bayern next season will not be easy.
After selling Jadon Sancho, I don't see Dortmund in the competition area I mean for the Bundesliga title. I think they are only targeting champions league tickets
Dortmund's total revenue in player sales sessions is 103 million while the total expenditure for new players is 45 million. they are not looking for a replacement for Sancho