Hello wonderful people,
My boss- born, breed and resides in London but visits Nigeria frequently has a Nigerian Business Visa which will expire before he is due to leave for London in a few weeks.
He has asked me to find out how he can go about renewing his visa here in Naija so that he doesn't run into any trouble at the airport.
I have asked around and done some research online and about, but have come up short.
Can anyone help me with valuable info on how he can go about this? I will extremely grateful.

Thank you.