Snapdeal's largest investor SoftBank is pushing for a possible merger between e-commerce majors Flipkart and Snapdeal next month, reports claim. SoftBank is likely to invest $1.5 billion in the merged firm for a 15% stake. SoftBank has reportedly drawn up three options for Snapdeal – merge with Flipkart, combine with Alibaba-led Paytm, or a write-down of SoftBank's investment to zero.