Drai has made the comments. Sometimes in English, sometimes in German. obviously he's been asked about his feelings on going to Germany with the team. its been a distraction for him. He looks stressed this preseason. Overwhelmed, not comfortable or at ease.
It could even be a little bit of German psyche. Most people find it relaxing to go back home to their native land. Germany isn't always that kind of place. it can be a stressful place in the cities that one would as easily avoid. Germany has a certain intensity to it that is easy to avoid. My parents for instance immigrated from Germany, they never went back, they didn't know why they would when they were asked. Drai likes Germany, but not enough to stay there either. If it wasn't for his dad and immediate family I wonder if he'd even be going back in the summers.
Of course you won't hear the latter thoughts from Drai, a German wouldn't be able to state anything like that and toxic reaction if they would, its just what I pick up. Germans quietly leave their native land (and still do in droves) they don't talk about the reasons too much.
Finally, Germany is in an odd place right now, for a lot of reasons we can't go into here. Lots of unrest and uncertainty. The most seen since unification. It doesn't help either that sports wise Germany is at its lowest ebb I've ever noted due to the WC.