Finance Minister P Chidambaram has favoured mergers in the banking industry so that India can have two-three global sized banks.Addressing the Annual Day function of the Competition Commission of India in New Delhi yesterday, he said, bank mergers could lead to too-big-to-fail entities.In its annual monetary policy, the RBI had said that it will release a discussion paper on banking structure in India by the end of next month which will cover issues such as consolidation of large-sized banks.Talking to reporters after the function, the Finance Minister said that India deserves a rating upgrade in view of improvement in macro-economic situation.Mr Chidambaram said there is nothing to worry as the country's macro-economic position now is much better than what it was in August 2012