Not on a massive basis. Selected African priests will be able to adapt to the culture, most will not.
Many African men are flocking to the priesthood because, frankly, nobody ever starved in a Roman Catholic seminary.
It's already working on a limited scale, in Ireland and here in the U.S. I've both read about and met numerous African priests working in LA, Dublin, Limerick, and even smaller Irish towns. Yes, there is culture shock at first - on both sides. But they get over it.
It might not work on a sudden, wholesale level - but I don't think the Church will proceed in that fashion anyway. I expect a steady escalation of imported priests in Europe and the U.S. And I think it will work out fine.