Borussia Dortmund chief executive Hans-Joachim Watzke has rubbished claims that Manchester United are set to sign striker Robert Lewandowski.

Poland manager Franciszek Smuda revealed last week that Lewandowski would join the 12-time Premier League champions this summer.

However, Watzke, whose side won the domestic double last term, is insistent the 23-year-old is not heading to Old Trafford.

Robert Lewandowski
Lewandowski netted the opening goal of Euro 2012 against Greece.

"It does not matter if we are to receive bids," Watzke told SID.

"I have said for weeks that Robert will be back in training with us after Euro 2012 and his holiday leave. And this is what will happen.

"I am tired of this speculation. I really don't care what the rumours are in the Polish media. I have a detailed knowledge of media in Poland and therefore I know how I have to classify those reports."

Having scored 22 goals in the Bundesliga last season, Lewandowski further enhanced his reputation with the opening goal of the European Championship against Greece.

The striker is set to play an important role in Poland's attempts to reach the knock-out phase of Euro 2012, with games against Russia and Czech Republic still to come after their opening day draw.

Following comments from his manager Smuda prior to Poland's Group A meeting with Greece, Lewandowksi dismissed talk of a move United, maintaining he was focused on his international commitments.

"I am so happy to score this goal in the opening match," he told a post-match press conference. "But I'm not going to concentrate on these issues (joining United). Euro 2012 is the priority. I'm totally focused on the national team."

United have already added Dortmund's Shinji Kagawa to their artillery for the new season, however summer losses to their striker force could demand more reinforcements.

With Dimitar Berbatov likely to follow Michael Owen out the door at United, Sir Alex Ferguson could find himself short of firepower come the start of the season, with Wayne Rooney and Danny Welbeck both likely to require recovery time having featured for England at Euro 2012.

Will Keane, who made strides with the reserve team last year, was expected to bolster United's attack for next season, however an anterior cruciate knee ligament injury could see him miss the whole of the campaign.