SAA and its sister companies cannot be sold as going concerns because of huge current debt, longer term finance and outside loans, guaranteed admittedly by Government. 
It's common cause that most of its aircraft are leased, not theirs, so cannot be sold, it's vastly overstaffed too. Goodness knows what sort of corrupt or poor Commercial Contracts are out there.

Nonetheless, some of the routes are attractive and will appeal to outside businesses, some of them might even be happy using the SAA logo... but these businesses too would want to start with a clean slate. They will be able to utilize many of the existing staff, flight crew, maintenance etc. 

In summary, Government would have to agree to take over the whole debt and contingent liabilities, then, a sale is possible. 
The debt and liabilities you will find will vastly exceed what is known so far. A horror story!