The Flying Eagles will take on their Congolese counterparts tomorrow in a friendly to prepare both teams for the U20 AFCON in Egypt.
The match will be played at the Complexe Sportif Sidi Mohammed in Casablanca, Morocco.
Kick-off time is 6pm local time, which is same time in Nigeria.
Nigeria are in Group A along with Egypt, Senegal and Mozambique, while Congo Brazzaville are pitted in Group B with Central African Republic, Uganda and South Sudan.
The Junior Eagles will play a second test game against CAR Wednesday also in Morocco.
The Flying Eagles trained Saturday morning for two hours under the watch of coach Ladan Bosso.
All 24 players trained with Belgium-based striker Ahmed Abdullahi still being expected.