Any US boarding schools that can give full financial aid to an international student?

Our relative decided to apply to US boarding schools. He is very creative, a good student with sports and arts, and has a great personality. However they are an international family from Southeastern Europe and would need full FA. Is that realistic? Do you know any US schools that he can consider? Thank you!

I know that Andover has scholarships for international students, some of them with full FA. Others have them as well, but I think they are typically tied to athletes or URMs. Many schools will offer FA if they like you enough. But keep in mind that the large majority of boarding schools are ‘need aware’.

@sgopal2 thanks a lot for your answer! I understand the chances are slim, but he wants to give it a try. I’ve also seen somewhere at this forum that it might be worth applying to the all-boys schools in this case.