Manchester United have been given a fresh hope in signing Robert Lewandowski this summer after Borussia Dortmund sporting director Michael Zorc revealed the Polish international will not be sold to their league rivals, Bayern Munich in the summer.

Robert Lewandowski

The 24-year-old has been one of the hottest properties in Europe and was linked with a move away from Dortmund with one year remaining on his current deal. United are long been interested in his services, but Lewandowski's agent earlier admitted the striker is joining the Champions League winners in the summer.

"We have communicated to the player and his advisers that we will not allow a transfer to Bayern this summer," Zorc explained.

"We have often been in the last few days together and talked about it. Now we have this principle-like decision and are pleased that Robert plays next season with us," Dortmund sporting director said.

Zorc's comments were echoed by Dortmund's CEO Hans-Joachim Watzke, who confirmed the striker will not be allowed to leave the club in the summer. The German side's chief is confident that Lewandowski will continue with the German giants and is ready to let their star player leave for free after the end of next season.

"Robert Lewandowski will definitely not go to Bayern switch in 2013. This is final. There is with him now, perhaps a small phase of disappointment, then he will deliver his usual performance - like that makes a professional with character," Watzke told Bild.

Meanwhile, Lewandowski has urged to leave Signal Iduna Park and admitted to have agreed terms to join another club in the summer.

"We have been in agreement with the new club for some time now. I have informed the people in charge at Dortmund and I assume that all will now be cleared up and I can join the club of my wish this summer," said Lewandowski.

"This would be the best thing for all sides. Dortmund are a fantastic club that will always have a special place in my heart. However, I am looking for a new challenge in the future," the striker added.

With Zorc's and Watzke's latest remarks it is highly unlikely the striker will be allowed to make a switch to the Allianz Arena. With Bayern out of the option, United could lure Lewandowski in the summer, if Dortmund decides to cash in on the player in the summer.