The 17-year-old lost his mother nearly two years ago. He then went to live with his father (who had remained living nearby after the divorce) but, with father's consent, spends a lot of time - including overnight stays - at the flat of a neighbour from where he lived with his mother. His father has decided to emigrate but the son will not be going. The neighbour seems to think the 17-year-old will move in with him. The father is fine with this. Forgive me, I try to research as much as I can but this bombshell has been told to me today (by the neighbour). Could this happen without any formal interaction? I cannot find a clear answer online since he is not currently "looked after". Due to his mother's death, he is receiving regular counselling and has a social worker. If relevant, he also has dyspraxia and ADHD and currently attends a specialist sixth-form college. I am a close family member who is very concerned about this situation. Thank you.