Robert Lewandowski will see out his Borussia Dortmund contract then join Champions League winners Bayern Munich for the 2014/15 season, turning down offers from England's Premier League, according to reports on Monday.
"Robert will definitely play for Borussia Dortmund next season. We need some clarity in our planning," Dortmund chief executive Hans-Joachim Watzke told Munich's Sueddeutsche Zeitung newspaper after Lewandowski scored 24 league goals last season and 10 in Europe.
According to Bild, Bayern chairman Karl-Heinz Rummenigge is reported to have confirmed to his agent that the 24-year-old player will join Bayern on a free transfer in June 2014.
With recent reports of interest from England's Manchester United, Chelsea and Manchester City, Borussia have denied reports they have already tripled Lewandowski's wages.
"That is complete nonsense," Dortmund's director of sport Michael Zorc told the Sueddeutsche Zeitung.
"It is clear to us that Robert's current salary isn't a correct illustration of the levels of his performances.
"Therefore we have signalled our readiness to raise his salary."
Having been German champions in both the 2010/11 and 2011/12 season, Dortmund need to rebuild their title-winning team after midfield star Mario Goetze signed for Bayern for 37 million euros ($49.34 million, Â£31.4 million).
Bayern are in no hurry to bring Lewandowski to Munich.
First-choice striker Mario Mandzukic scored 21 goals for the the Bavarian giants, as they became the first German team to win the treble of league, cup and European titles.
Meanwhile, Borussia's Germany international midfielder Ilkay Gundogan, under contract until 2015, has told German magazine Kicker he wants to extend his Dortmund deal.
Gundogan, 22, said talks to prolong his contract would get under way once he has returned from holiday having been linked to Barcelona, Real Madrid and Arsenal after an impressive season.
"I am very, very happy here. We have developed a lot, and I know that it will continue and will even get better," he said.
"I will definitely play for BVB next season. We will see how it will continue after that."