The Poland international has agreed personal terms with Bayern and has made it clear he would prefer to play for them, but Dortmund have turned down a bid from the Bavarians and will not be selling Lewandowski to them this season.
The Westphalians have received better bids from other clubs around Europe, but the player has vetoed a move, knowing he will join Bayern on a free transfer when his contract expires next summer.
Until then, however, he has promised to give everything for his current club, despite indifferences with club bosses who blocked his dream move.
"No matter what has happened, that doesn't interest me when I take to the field," he told the Bild newspaper.
"As soon as I stand on the grass and play, then all I think about is Borussia Dortmund.
"I want to give my best and be successful. I will give everything for Dortmund."
Lewandowski got the better of his likely future club last Saturday as Dortmund lifted the German Supercup with 4-2 win over Bayern, although the Pole did not get on the scoresheet himself.