At least 18 players have arrived in the Super Eagles camp ahead of their friendly match against Algeria.
Hajduk Split defender, Chidozie Awaziem, was the first player to arrive on Monday.
He was joined later in the day by 17 other squad members as training began ahead of the match.
The quartet of Francis Uzoho, Adewale Adebayo, Ebube Duru, Godwin Saviour and Kelechi Iheanacho are expected in camp on Tuesday morning.
Nigeria will play Algeria at the Miloud Hadefi Stadium, Oran on Tuesday, September 27.
The three-time African champions have another friendly lined up for next month against Portugal.