If there’s a complication, it would come along the lines of rights; particularly contract. For the idealism of contract rights is that you are owner of yourself and as such have right to enter yourself into agreement. A type of function “non-self-ownership” would be age of consent laws. Below age of consent, functionally the minor doesn’t own themselves because they cannot on their own willingly enter themselves into contract.
In the end, I think the idea of innate and inalienable self-ownership makes the most sense from a functional and philosophical standpoint.