Dortmund still managing to be doing great while Haaland is out could be one of the most promising things for them. I always say that the moment Moukoko starts to play greatly then they will no longer "need" Haaland.
Moukoko is a genius but he does not have good body like Haaland and I don't think he can play with same role as Haaland is playing for Dortmund. If Haaland leave Dortmund, they will have to find another striker. Moukoko can play at wing areas and he can bring more dangerous pressure to opponent's defense.
It is very good that they didn't build the team on Haaland,because if they had done that,by now,it would have been a loosing streak without Haaland.
They did but they changed too. They are realistic that they can not keep Haaland in their club and the days he leaves is not too far. Dortmund are good at preparation for transfers of their key players. To prepare for the transfer of Sancho, they bought Bellingham. I don't know what is the plan of Dortmund to replace Haaland but I believe they do have it.
But I think with the way they are playing now, selling Haaland might be on their mind,after all,the team is still achieving great result without their best player.
But in the next summer, they will get less money than if they sell him a few months ago.