The Poland striker has recently been strongly linked with a move to Manchester United.
Borussia Dortmund chief executive Hans-Joachim Watzke 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.”
Poland boss Franciszek Smuda hinted last week that the striker would join Manchester United.
“Lewy is going to Manchester United, Kuba (Jakub Blaszczykowski ) also somewhere in England, and Piszczek to Real,” the Poland boss said.
