New Delhi, Mar 21(ANI): Congress leader Ghulam Nabi Azad on Monday asserted that there could be only one Bhagat Singh and none of the boys from the present generation can replace the freedom fighter. He added that he doesn't know what Shashi Tharoor has said but no one can replace Bhagat Singh, especially the boys of this generation. Elaborating further, he said that only one Bhagat Singh can be born in this country and he is irreplaceable. Speaking on 'JNU and Nationalism' outside the administrative hall of the varsity yesterday, Tharoor, while replying to a question from the audience, admitted that there were some similarities between Bhagat Singh and Kanhaiya Kumar.