Such nonsense is not accepted anywhere in Europe, EU era and pre- EU era.
Out of an estimated 1.200,000 foreign-born residents in Nigeria, 74 percent are ECOWAS citizens, (ECOWA members are Benin, Burkina Faso, Cape Verde, Côte d'Ivoire, Gambia, Ghana, Guinea, Guinea Bissau, Liberia, Mali, Niger, Nigeria, Senegal, Sierra Leone, and Togo) with another 12 percent from other African countries, left over 3 percent Asians, 6 percent citizens of the Americas and finally
5 percent from Europe.
Estimating a population of 170 million people in Nigeria the amount of European expats working in this beautiful country makes about 0.6% or around a million residents.
For comparison only, the estimated population of Nigerians living and most possibly working just in the UK gives a figure of 500,000 people.
I guess there are plenty of UK/European citizens who would be qualified to do the job, done by Nigerians…….
Crucial to Nigeria's development will be research investments in understanding internal, regional, and international migration, together with developing policies and institutional capacities to manage not only the current and anticipated flows, but their implications for origin communities and destinations.