The 24-year-old striker had been heavily linked with a move away from the reigning Bundesliga champions last month, with the Premier League touted as a potential destination.
Red Devils boss Sir Alex Ferguson has been credited with an interest in Lewandowski's signature, despite possessing arguably the best group of strikers he has ever had at Old Trafford.
The £24million summer arrival of Robin van Persie from Arsenal, added to an already fearsome front line - which includes Wayne Rooney, Javier Hernandez and Danny Welbeck - but that hasn't quashed rumours of Manchester United's reported interest in Lewandowski.
Juventus and Bayern Munich are also believed to be monitoring the Poland international's situation at Signal Iduna Park, and are ready to rival United for his signature in the summer.
"I knew I wouldn't leave Borussia this winter, that is why I kept my distance from most of the news," the in-demand star told Przeglad Sportowy. "I might have been nervous if that was my only source of information."
When questioned about his Dortmund future, Lewandowski added: "I can't answer that question. Everything is possible. I'm not ruling out any possibility right now."
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