apparently generally Germans thought he should be called up even if he wasn't a starter and when the coach refused again to call him up, this time for an Asian tour, he had enough.

Apparently his Dad wasn't around a whole lot and he's always thought of himself as German so I'm sure there will be those that will make noise about him not playing out of loyalty to the country and all that but he's welcome IMO, if he plays hard that's fine with me.