The Polish striker's current deal at Signal Iduna Park expires in June 2014, and he has been widely linked with a move to the Allianz Arena, or to Manchester United.
"I'm totally relaxed about the Lewandowski rumors," he told Bild.
"Bayern is not planning to hold negotiations with Borussia Dortmund over the transfer of Lewandowski."
Upon hearing what the former West Germany international had said, BVB chief Hans-Joachim Watzke admitted that he was relieved.
"It's great," he noted. "We also don't want to hear anything from Bayern."
The German champion's sporting director Michel Zorc admitted on Saturday that he was unsure whether the 24-year-old would elect to sign a new deal.