There is NO "Right of Return" for them, nor for others (ie, Millions of 1947 India/Pak partitioners, or 2 Million 1945 Sudeten Germans)
And of course, due to their population Explosion, Most would have had to move a few miles anyway.
NO FURTHER than they live now!
So let's just make them citizens-in-place of wherever they are: the Same/Next NON-descript Arid hill in 'paleshtein' or Jordan or Syria or Lebanon. It's not like they're exiled in Iceland.
The same way All other post WWII refugees got absorbed.