Borussia Dortmund's Polish striker Robert Lewandowski has told German magazine Sport Bild that he wants to leave his current club this summer for a "new challenge" elsewhere.
"I have informed Dortmund. I suppose that everything is clear now and I will be able to leave this summer to go to a club of my choice. It will be better for everyone," said Lewandowski, 24, whose contract with the Champions League runners-up expires in June 2014.
"Dortmund is a fabulous club that I always love. But I need a new challenge," added the Pole, who scored 36 goals in all competitions for Dortmund in the season just finished.
He made no mention of any prospective future employer. Bundesliga rivals Bayern Munich remain his most likely destination, even if Dortmund coach Jurgen Klopp assured last week that there was "no official offer from Bayern."
Klopp added that he was working on the basis that Lewandowski "will still be with us next season."
Dortmund are loath to see another of their leading players move to Bayern after Mario Goetze revealed that he would be joining the German record champions this summer.
Lewandowski, who moved to Dortmund from Lech Poznan in 2010, could move this summer if a bid in the region of 25 million euros is made for him.
Otherwise, he would be free to join Bayern in the summer of next year when his contract expires.