Like a physical property. Imagine I say that magnets stick to fridges because they have a magnetic field. I explain and define the properties of the field and how it sticks to the fridge, and you say there's a possibility that the magnet could stick to the fridge without a magnetic field (glue or adhesive notwithstanding). Then I say that if it didn't have a magnetic field it wouldn't be a magnet in the first place. That's sort of where we are. A person is the magnet, a property of magnets is the magnetic field, and the sticking-to-a-fridge is an effect of the "self ownership" that causes the effects of people being responsible for their actions, their time, bodies, being able to self actuate on their own without being coerced, and so on. If you can remove a magnetic field from a magnet and tried to stick it to a fridge and it fell, it would prove that it sticks to a fridge due to the magnetic force. If you can remove self ownership from a human and still have it have sentience, and consciousness, and self awareness, and decision making, and moral capacity, and still have it be called "a human being" you could have an argument on how humans can exist as they are now and not have self ownership. But you can't, because that would be like taking the magnetic field off a magnet, and still call it a magnet even though it is no longer a magnet. It would just be a piece of metal or ore.
Ok, are you suggesting that the self that has self ownership is some sort of field? I just want to get clear on what you are saying here?