Ambrose, who has filled in at right back during the tournament, picked up a red card in Nigeria's opening game against Burkina Faso and has not spoken since.
But the defender says the red card is not the reason for his silence.
"I don’t think there is anything to say now.
"I just don’t want to say anything until we get to the Final. Then, there will be something to say."
Nigeria face a daunting route to that goal, with Cote d'Ivoire the immediate hurdle.
But the Celtic man remains resolute in his resolve.
"Let's wait until the Final."