Haaland is a really big player already now. He is the source of Dortmund's most goals now. He has scored so many goals at this age and become already a great striker in football history. He is doing it in one of the big leagues like the Bundesliga. When he was absent due to an injury, Dortmund didn't have a good time in the Bundesliga and the Champions League. It was even expected from Haaland to be back by the new year. But he is a so determined player that he started playing again much earlier. In short, Dortmund should do everything they can to be able to keep him for at least one more year.
we don't know when exactly to come back, he got a muscle injury, maybe he has long a break for recovery. this is will be affecting Dortmund and maybe the market also. as I know real Madrid very wants his service when Haaland is a very risk from injury maybe the price is not the same as before. possibility, Madrid didn't want to repeat the same mistake as they bought Eden Hazard.
Anyway, Erling Haaland is currently in good health and he has gone through his injury period. Also, I'm not sure Dortmund will be able to keep Haaland for much longer, because Dortmund themselves are like a team that supplies great players to other teams including their own rivals in the Bundesliga like Bayern Munich. So yeah, when there's a higher bid and that's good for the club's income, then I'm sure Haaland will still be let go in the end and that's not something that's strange anymore.
I know there is a special clause in Haaland's contract. At the end of this year, it will be possible to transfer with an active substance and a certain testimonial fee. Borussia Dortmund is very strong economically. They usually bring young and potential football players to the world market. They usually make very good profits, although sometimes they can't do what they want. They will also make a good income in the Haaland transfer. They could also find another young player with potential to replace Haaland. Dortmund's Scout team is one of the best in the world.