A news report a few days ago (video? Can’t find it now), mentioned a recently arrived Muslim migrant to France who spoke fluent German.
The new Austrian government has announced that it will begin reducing the benefits of migrants who do not integrate. This is a blunt sword as obviously Muslims can never integrate into societies that values freedom and tolerance.
My guess is that these two events are directly related and that Muslims are going to be fleeing Austria in ever-increasing numbers for more benefits-friendly countries.
My second guess is that this will lead post-haste to Austria’s neighbours announcing their own reduced benefits schemes.
Reduced benefits for Muslim migrants who don’t integrate will snowball. At some point, that will stop them arriving.
Reduce them far enough and it will cause them to return home.