By the last count, 20 players have now reported to the Super Eagles training camp in Lisbon ahead of Thursday’s friendly against Portugal, while Samuel Chukwueze, Francis Uzoho and late call-up Cyriel Dessers are still expected.
England-based goalkeeper Maduka Okoye was the latest arrival in camp.
The Eagles had their first training Monday night under the watchful eyes of coach Jose Peseiro.
Napoli striker Victor Osimhen and Orlando Pirates of South Africa defender Olisa Ndah have pulled out of the game due to injury.
Dessers and Chidozie Awaziem have since been drafted to replace them.
Dessers has recovered from injury, which has seen him miss the last three matches involving his Serie A club US Cremonese.
Ajax defender Calvin Bassey is in camp to clear doubts about his availability after he was forced out of his club’s weekend Dutch league match.
Nigeria will tackle Portugal in a first-ever full international match Thursday.
It will be a final warm-up game for Portugal before the 2022 World Cup, where they are drawn in Group H against Ghana, Uruguay and Korea Republic.
Portugal are ranked ninth best team in the world, while Nigeria are 32nd.