Let him be a German if he is,
don't get me wrong, I personally don't care who he is it was more like a technical question if a citizen of one country is to be seen as a part of it, that's all.
the issue is whether what he does is for the greater good of Poland not Germany.
fully agree with you here, as long as he does a good job for you guys (whether he does or not is up to you to determine that), why would anyone care.