Deloitte said Friday it's still not possible to determine how much of Virgin Australia's debt can be recovered, though more details will come in a report to creditors that's due before the end of August. Shareholders, though, will probably get nothing, Deloitte said. Virgin Australia was almost entirely owned by four foreign aviation groups — Singapore Airlines Ltd., Etihad Airways PJSC, HNA Group Co. and Nanshan Group Co. — that each owned 20% stakes. Richard Branson's Virgin Group owned about 10%. Deloitte's decision ends an auction process that initially drew interest from more than 20 parties. Cyrus exited with a fiery attack on the sale process, accusing Deloitte of a "lack of engagement" since the U.S. investment group submitted its takeover proposal on June 22. In a separate statement, Bain said it will strengthen Virgin Australia's regional services and continue serving business travelers.