Uganda Cranes technical bench is expecting to have first choice Keeper Denis Onyango and Moses Opondo ahead of the three nations in Niger.
The side led by coach Sebastian Desabre held the first session on Monday at the Stade General Seyni Koutche outer pitch.
21 players attended the session after Emmaneul Okwi and Joseph Ochaya connected with the team at Bole Airport in Addis Ababa while Bevis Mugabi, Yunus Sentamu and Edrisa Lubega had earlier arrived in Niamey.
“The players yet to join- Captain Denis Onyango and Moses Opondo are expected to join the rest on Tuesday evening” read a statement by FUFA.