This is a very interesting case. Goetz is a '93 RB at Hamburg. He has played 151 minutes in the Bundesliga this year and has another 90 in the Cup. I believe thats more minutes than Green has played this season. He doesn't seem to have ever appeared for German youth teams at any level. Sites like transfermarkt.co.uk and other databases seem to list US nationality, so thats good enough for him to get his own thread. There is also this. Credit to @Dave Marino-Nachison for finding this guy. Great work.