For Britain, at least, the return of Poles back to Poland is a good thing because this will help slow down the rate of unemployment that always comes with a recession. Also, they will free up jobs that we didnt want originally,but do now- or rather, jobs that we did want, but couldn't get, because we had been squezzed out by the low wages that attracted immigrants but would not sustain a British person. The rate of immigration was far too high to be sustainable and we didn't have enough housing for them, which, in turn, pushed up rents for immigrants and indeginious people alike. Wages were pushed down and rents pushed up. As always, it is the, mostly, unskilled working class that suffers.