Kolkata, Aug 1: City giants East Bengal and Mohun Bagan will lock horns on September 2 in the Calcutta Football League (CFL) Premier Division ‘A’ in this season’s first derby, it was announced here on Wednesday. The other two big clashes — East Bengal versus Mohammedan Sporting and Mohun Bagan versus Mohammedan Sporting — will be held on September 9 and 16 respectively. The colossal Vivekananda Yuba Bharati Krirangan will host all the three matches. East Bengal will take on Tollygunge Agragami on Friday for their CFL season opener. (IANS)