Borussia Dortmund striker Robert Lewandowski has refused to comment on his future following talk of a move away from the Westfalenstadion.

The 24-year-old, who has scored 34 goals in all competitions this season - including four against Real Madrid in midweek - was reported to have agreed a contract with Bundesliga rivals Bayern Munich.

Meanwhile, long-term admirers Manchester United have also been linked with another move, but the Pole insisted that his future has not been decided yet.

"I will not comment on pure speculation," he told Polish newspaper Fakt. "The media write a lot about me, but that's just their duty.

"It's hard for me to say now what will happen when the season ends.

"I focus on the nearest game and then the second match with Real. We will see next what life brings."

Lewandowski's current deal expires at the end of next season.