Reports in the German press claimed last season's Champions League finalist would sell the defender for 35 million pounds next summer, but the club's CEO calls it "nonsense."
The Germany international, 24, has long been linked with a move to the Spanish champion, and a number of recent reports suggested that BVB is ready to let go of Hummels if a 35 million euro offer comes in.
Watzke, however, has laughed off the rumors
"That is absolute nonsense," Watzke told ZDF. "This is a complete non-story. There's no truth whatsoever in these rumors."
Hummels, who has made 12 appearances this season for Jurgen Klopp's side, has a contract with Dortmund until June 2017.