He has an 8 year old son in Moscow who is living with his mum. The parents divorced just after this boy was born. The now-Brit father has a new family etc in the UK but wants to have his son visit him in the UK. The child applied for a tourist visa and will be visiting his dad if the visa is granted.
The question is, the father would want the son to have the education in the UK in the future and may consider having the kid live with him. Is there any way the boy could get BC?
1) The boy was born outside the UK;
2) At the time no parent was a British Citizen;
3) Recently the father became naturalised and lives in London;
What are the options please? The father is more or less loaded if that would make any difference

thank you