Dortmund CEO Hans-Joachim Watzke did not confirm a release clause in the contract of striker Erling Haaland.
The Norway international is reportedly available for a set fee this summer, as part of the contract he signed when he joined the club.
Various reports in European media have stated the clause is between €75 million and €100 million.
When asked during a club general meeting if the clause exists, Watzke replied to a shareholder: "I can't confirm that."
However, he did state there was an agreement between the player and club about a possible summer exit.
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