You don't need to speak German here ;), This is the forum of The Netherlands, so you need to speak Dutch hehe
. (It's not really different from German though), but to the point;
If your player is Dutch he is not good enough to play in our national team.
We have got some centers already who are better, taller and younger. But anything can happen like injurys etc, so if you keep training him he might have a really small chance.