Napoli striker Victor Osimhen landed in camp on Tuesday morning.
Others still expected to arrive include, Chidozie Awaziem, Zaidu Sanusi, Paul Onuachu, and Joe Aribo.
Meanwhile, Hoffenheim defender, Kevin Akpoguma has pulled out of the squad, after testing positive for COVID-19
THE FULL LIST
Goalkeepers: Francis Uzoho (APOEL Nicosia, Cyprus); Daniel Akpeyi (Kaizer Chiefs, South Africa); Maduka Okoye (Sparta Rotterdam, The Netherlands)
Defenders: Chidozie Awaziem (FC Boavista, Portugal); Kenneth Omeruo (CD Leganes, Spain); Leon Balogun (Glasgow Rangers, Scotland); William Ekong (Watford FC, England); Olaoluwa Aina (Torino FC, Italy); Jamilu Collins (SC Paderborn 07, Germany); Abdullahi Shehu (AC Omonia, Cyprus); Zaidu Sanusi (FC Porto, Portugal);
RULED OUT: Adekunle Adeleke (Abia Warriors, Nigeria), Kevin Akpoguma (TSG Hoffenheim, Germany)
Midfielders: Oghenekaro Etebo (Watford FC, England); Wilfred Ndidi (Leicester City, England); Frank Onyeka (Brentford FC, England)
RULED OUT: Joseph Ayodele-Aribo (Glasgow Rangers, Scotland)
Forwards: Ahmed Musa (Fatih Karagumruk, Turkey); Alex Iwobi (Everton FC, England); Samuel Kalu (FC Bordeaux, France); Victor Osimhen (Napoli FC, Italy); Kelechi Iheanacho (Leicester City, England); Moses Simon (FC Nantes, France); Paul Onuachu (KRC Genk, Belgium).