FC Nantes winger Moses Simon, Paul Onuachu of Southampton and Brentford midfielder Frank Onyeka have swelled the number of Super Eagles call-ups to 16, officials said.
Seven other players are now expected in training camp in Abuja.
Other players in camp are Kevin Akpoguma, Joe Aribo, Ademola Lookman, Alex Iwobi, Semi Ajayi, Francis Uzoho, Wilfred Ndidi, Kenneth Omeruo as well as fresh invitees Daniel Bameyi and Chijioke Aniagboso.
Both Bameyi and Aniagboso were in the Flying Eagles who finished third and qualified for the U20 World Cup in Indonesia later this year.
Nigeria welcome Guinea Bissau Friday at the MKO Abiola National Stadium in Abuja in continuation of the 2023 AFCON qualifying tournament.
They lead Group B with perfect six points from two matches, two points ahead of their latest opponents.
Sierra Leone and Sao Tome and Principe are the other teams in this group.
