Virgin Australia Holdings Ltd’s unsecured creditors will receive an average return of 9-13% of their funds as part of U.S. private equity group Bain Capital’s proposed purchase of the airline, administrator Deloitte said in a report on Tuesday. The unsecured creditors include 6,500 bondholders who are owed A$2 billion ($1.43 billion) by the country’s second-biggest airline and will receive a return of 8.9% to 13.3%, less than the 14.4% return ...