The once-dominant U.S. Internet giant remained open to alternative deal structures, including a taxable transaction, the source added.

Yahoo had not been informed that the original, proposed deal -- a so-called tax-free or cash-rich split-off -- was officially dead, the source said, on condition of anonymity.

(Reporting By Alexei Oreskovic; Editing by Gerald E. McCormick)

Stocks treated in this article : Yahoo! Japan, Softbank Corp, Yahoo! Inc.