The German champions have indicated that they are preparing for the possible departure of Robert Lewandowski but have made it clear that anybody who replaces him, particularly Manchester City striker Edin Dzeko or Atletico Madrid’s Radamel Falcao, would have to fit into the clubs wage structure.
"[Dzeko] is an extraordinary forward," he told Sports Image.
"Falcao for example is great as well. One thing we can say about these names, but also about others: At Borussia Dortmund, everything was made regarding our conditions and salary structures. We won't cancel this for any player in the world.
"That is what he has to do by himself. If and when Robert [Lewandowski] leaves, a new forward has to accept our conditions. Then he is interesting.
"If anybody wants to come to us, he has to adapt financially. Then he can have real fun, probably more than at his old club."