NIGERIA SOVEREIGN INVESTMENT AUTHORITYCLAN PLACE, PLOT 1386A,TRIGIS CRESCENT, MAITAMA, ABUJATEL: 09-4610400WEB: www.nsia.com.ngEMAIL: info@nsia.com.ngINVITATION FOR EXPRESSION OF INTEREST FOR AN INDEPENDENT TECHNICAL ADVISER A. INTRODUCTIONThe Nigeria...