TOKYO/HONG KONG :Bidders for Toshiba Corp are considering offering up to 7,000 yen ($51.41) per share to take the troubled Japanese conglomerate private, three people familiar with the situation told Reuters, valuing the deal at about $22 billion. Toshiba, which is exploring strategic options, said this month it had received eight initial buyout proposals and two proposals for capital alliances that would see it remain listed.