Head coach of the Super Eagles, Gernot Rohr has already selected the 30 players in his 2018 World Cup preliminary team list, which he will submit to FIFA next month.
Nigeria will feature in Group D at the tournament alongside Argentina, Croatia and Iceland.
The bulk of the players who qualified the country for the World Cup are in the list, alongside some new players who impressed Rohr in recent friendly games.
“Rohr will meet with the technical committee to deliberate on the list and other issues when the team comes together in Abuja on May 22.
“The coach wants to concentrate on the players likely to be in his final team hence he chose to narrow the list down to the preliminary 30 before the next round of matches.
“Rohr is currently in Europe with some of his officials working on ways to prepare the Super Eagles for a credible performance in Russia,” a source told The Guardian.
Super Eagles’ Media Officer, Toyin Ibitoye, has already confirmed the team will assemble in Abuja on May 22, before playing DR Congo in a farewell match on May 28.
Nigeria will clash with England on June 2 at Wembley before their final warm-up match against Czech Republic on June 6.