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.
Seems like Haaland has muscular problems again and it is not sure, if he can play in the next games yet because Dortmund has not made a official statement yet regarding that topic. So we don't know yet if Haaland has just some slight pain or if he is really injured again and will miss for a few weeks. I don't really think that small injuries like that would scare off clubs that are interested in signing Haaland for the next season. I mean muscular problems happen a lot and are usually not that big of a problem. Haaland missed some games this year that is true, but it is not like that he had 2 big knee injuries or cruciate ligament ruptures already.