The Vatican is looking into bringing African priests to Europe to fill vacancies left by too few European priests. In return, some European priests would go to Africa to teach in seminaries and provide pastoral experience. (I hope that Africa changes Europe to be more orthodox and not vice versa.)
I think it may also become a more common sight in the US as well. You’re already seeing foreign-born priests filling a lot of spots in certain missionary dioceses in the US, but that may spread to larger dioceses that traditionally raised up priests from among their own people. Of course, we can’t forget that archdioceses like Boston and New York have always had foreign-born priests, from Ireland, Italy, France, and so on, brought in to serve, especially immigrants from their native lands.