Sprint Corp has received proposals from at least two banks on how it could finance a takeover of smaller rival T-Mobile US Inc, people familiar with the matter said.

Terms of any bid have yet to be firmed up, one of the people said. But the proposals envision a total "enterprise value" of about $50 billion for the deal, which would involve paying around $31 billion for T-Mobile and providing for a possible refinancing of roughly $20 billion in existing T-Mobile debt, the people said.

T-Mobile has a market value of about $26 billion as its shares have risen nearly 28 percent since The Wall Street Journal reported last month that Sprint was stepping up its efforts to reach a deal between the companies. Meanwhile, Sprint\'s shares have risen about 11percent over the same period.