Ummm,the government has authorized taking the land without compensation. What black is going to buy the land when he only needs to apply to take it?
It is now at a point where you just leave.
There may still be a chance to sell. If you're not related or "connected" your application for free land will go no where without a little lubrication ( a bribe ).
In that case, it's possible buying the land might be cheaper than bribing the official to take it for you.
That is unless you need to bribe another official to approve the sale...
It's third world. It's complicated.
And go where, with no visa and little money?
South African Atlas will shrug in 3, 2, 1.........
To take it from whites. It they actually specify that a black buyer is for the moment clear.