Well that's the problem now, so far it has been speculated that Haalaand will leave, and the sporting director of Dortmund has also said that Haaland will not leave this January, although Haalaand has not made an official statement about his desire to leave Dortmund, but Mino Raiola is the haaland agent has said that haaland will leave dortmund soon without mentioning the exact time he left, besides if you look at the match between dortmund and Furth last week, it looks like haaland has signaled his departure because at the end of the match, haalaand was seen waving to the dortmund supporters.
Haaland will probably leave Dortmund next season. Even if he leaves Dortmund this season, Dortmund should not have any problems. Because they can't win the Bundesliga title. They are already 9 points behind Bayern Munich. Moreover, they have been eliminated from the Champions League in the first round. Their only goal now is the Europa League title. Dortmund may decide to keep Haaland in the squad to win the Europa League title. Because if Haaland leaves the team, Dortmund will not be able to play well in the Europa league.