The Poland international has been linked with a number of clubs, including Manchester United, Chelsea and Bayern Munich.
Dortmund sporting director Michael Zorc has told Bild: “There have been enquiries from several clubs.
“Our position has not changed since March, Lewandowski still plays at Dortmund.”
Dortmund chief executive Hans-Joachim Watzke added: “There were other clubs interested in him.
“I am repeating myself but Lewandowski will play next season for Dortmund.”
