Borussia Dortmund’s chief executive has accused his opposite number at Bayern Munich of deliberately attempting to unsettle Marco Reus.

A statement on the German club’s website from Hans-Joachim Watzke released on Wednesday states that his counterpart Karl-Heinz Rummenigge’s recent comments about the Germany international Reus “is only going to further damage an already tense relationship between Borussia Dortmund and Bayern Munich”.

In an interview with the German newspaper Bild last week, Rummenigge was quoted as saying that Reus – who was forced to miss the World Cup with torn ankle ligaments – has a €25 million (£19.8 million) release clause in his contract, before adding in another interview with ESPN that the 25-year-old is a “very interesting player” and that his release clause is “dangerous”.

“Borussia Dortmund has noted with some irritation that Karl-Heinz Rummenigge is currently discussing internal BVB matters in a three-day rhythm in the media,” read the statement. “We are sure that it is quite clear to anybody interested in football what intentions lie behind such remarks. Karl-Heinz Rummenigge is also fully aware that his behaviour is only going to further damage an already tense relationship between Borussia Dortmund and Bayern Munich.

“Naturally as employers, we are going to continue to follow our principles in future and not discuss any details of our employees’ contracts in public.”

Reus is not expected to feature in next week’s Super Cup clash with Bayern as he continues his rehabilitation but is confident of making his comeback soon.