Rakeysh Omprakash Mehra dismissed rumours that the sportsman himself had suggested the action star should play him.
He told Hindustan Times: "This is absurd, he is such a senior person, an athlete. Why would he get into who should play whom in the film? This shows the level of media reporting in our country."
The director also rubbished rumours that Paa star Vidya Balan would be playing Milkha's wife in Bhag Milkha Bhag.
Singh, nicknamed 'The Flying Sikh', competed for India in the 1960 and 1964 Olympics.