With the Games in Rio fast approaching, the Nigeria U23 coach has been left frustrated by the Citizens' attitude towards the youngster's release for the national side
Iheanacho, who is widely expected to spearhead Nigeria's bid for gold in Brazil, has indicated interest in playing for his country but with the Citizens delaying confirmation of his release, Siasia is complaining bitterly.
"The Nigeria Football Federation (NFF) has written several letters to [Manchester City] wanting to know when the player would be released for the Games in Brazil but as I speak with you the club has not replied," Siasia told SportingLife.
"So for now I cannot confidently tell you that Iheanacho would be available for the Olympics. Although we are not relenting on the issue as the NFF is fighting tooth and nail to ensure we have our best players for the Olympics.
"Kelechi also told me he is anxious to play in the Olympics and I am sure with much pressure the boy would be released eventually. But for now I cannot tell you he will be in the Olympics."
Iheanacho, 19, scored 14 goals in 35 appearances for City in a memorable debut season for the Citizens.