Medibank Private

A few weeks ago the Shadow Treasurer, Joe Hokey said that if the Coalition won government, in order to reduce the debt, the Coalition would sell Medibank Private. Currently I believe that there is a 33% rebate by the Federal Government. How is Medibank going to operate if sold. What will happen to the 33%. How many premium increases will there be and how often will increases occur. Myself and others would like to know.