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.