Fair enough. Remember that the whole point of this intellectual exercise is to develop a system of norms that allow conflicts to be resolved without violence.

Ah yes that is true. 
But the problem with war is that it doesn't care about the rules. My answer may have been affected by current wars in the world as it was the first thing that came to my mind, sadly.

quark

That violates the self-ownership that had already been established.

Undisciplined

libertarian

Tough Questions for Libertarians 3/15

My guess is that the owner kills the person that can't relocate to solve the problem. War.