New Delhi, Apr 19 () Fintech company Paytm is believed to be in discussions with Japanese conglomerate SoftBank to raise over USD 1 billion.The deal, if successful, will value the Alibaba-backed Paytm at over USD 7 billion from the current USD 5 billion, multiple sources said.When contacted, Paytm and SoftBank declined to comment. Interestingly, SoftBank was an early investor in Alibaba.