Borders' financial troubles in the e-book era could come to a head early next week after a leak has revealed it's close to bankruptcy. The bookseller is now believed to be filing a non-permanent Chapter 11 bankruptcy as soon as Monday or Tuesday. Its plan would see it get debtor-in-possession financial backing during the bankruptcy of as much as $450 million from Bank of America or GE, but it would also close 200 of its existing 674 stores, the WSJ sources behind the leak said.