I know FC Utrecht is not the biggest team overseas, but still a good read. Pro Prospects: American Keeper goes Dutch
Snip: The Minnesota Thunder Academy goalkeeper has already trained at West Ham and will be spending a week with FC Utrecht (Netherlands) in August. And apparently he has German citizenship.
They are also definitely not the smallest. A 16-year old training at West Ham and Utrecht is in a really good place if he is signed by either club.
He redshirted this past season as a sophomore at University of San Francisco. http://usfdons.com/roster.aspx?rp_id=2539
The club uses FuPa for its roster pages, and here's his for this season: https://www.fupa.net/spieler/treston-kederer-1666127.html It doesn't show any appearances. They seem to be getting hogged by a German veteran named Maximilian Riedmüller who (according to Wiki) started his career at Heimstetten, jumped to Bayern Munich but never got into a first-team game, and then eventually made his way Heim.