According to the team newspaper, Borussia Dortmund offered Haaland a new contract with an annual salary of 16 million euros, but Haaland has decided to leave because he is disappointed in Dortmund.

Dort hoped Haaland would stay for another season, and the club had already offered him an intra-team salary extension of €16 million a year, but Haaland refused.
According to the team newspaper, Haaland is very disappointed with Dortmund's results, on the one hand, they are very far behind Bayern in the league, on the other hand, the team is out early in the Champions League group stage.
According to the news, the team that signed Haaland needs to spend a total of about 300 million euros, of which 75 million euros is a transfer fee, 20 million euros is a commission, and the rest is the total salary and bonus of a 6-year contract.