By Karlee Weinmann (January 17, 2014, 1:25 PM EST) -- U.S. wireless giant Sprint Corp. would have support from Japanese lenders if it decides to pursue a long-rumored takeover of rival T-Mobile USA Inc., The Wall Street Journal reported on Friday. At least one major Japanese bank has outlined a preliminary proposal for its part in a prospective financing of such a deal, and other lenders in the country would also be open to jumping on board. Such a transaction would hinge on a mammoth financing package — a $50 billion price estimate hangs over the proposed deal, including the refinancing of T-Mobile's $20 billion debt load. Japan's SoftBank Corp. last year took over Sprint in one of the biggest deal of 2013....