The Central Bank of Nigeria (CBN) has issued licenses to five new banks, according to three banking sources familiar with the matter, who spoke to us. Sources say the CBN is being driven by the need to attract new investments into the sector and serve the country’s over 50 million unbanked and under-banked people, even as current banks have struggled to grow loan books since an economic slump in 2016 caused bad loans to surge. The sources, who say the…