Speculation over the Poland striker's future grew last week, after his international manager Franciszek Smuda claimed the scorer of the opening goal of Euro 2012 was on his way to Old Trafford.
But the chief executive of the German side, Hans-Joachim Watzke, claims the stories in the media are wide of the mark.
He told Sportinformationsdienst: "It does not matter if we are to receive bids.
"I have said for weeks that Robert will be back in training with our club after the Euro 2012 and his holiday leave. And this is what will happen."
"I am sick of these speculations," he added. "I really don't care what the rumours are in the media of Poland.
"I have a detailed knowledge of media in Poland and therefore I know how I have to classify those reports."
Smuda's comments last week also called into question the futures of another two Dortmund players.
"Lewy is going to Manchester United, Kuba (Jakub Blaszczykowski ) also somewhere in England, and Piszczek to Real," the Poland boss told the media before Friday's opening game.
But Watzke has refused to believe that.
He continued: "I am going way back with Smuda for years. We have a good relationship. I do not think he has said things like that."
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