Nigeria defender Azubuike Egwuekwe is a major doubt for Monday's opening Group C match against Burkina due to illness.
The towering Warri Wolves stopper missed the team's accreditation for the AFCON on Friday.
However, Eagles spokesman Ben Alaiya assured Egwuekwe will be fit for Monday's match.
"He's just under the weather and should be fine for the first game.
Previously an ever-present under coach Stephen Keshi, Egwuekwe has lost his first-team place to Godfrey Oboabona, who is now expected to partner skipper Joseph Yobo in the heart of the back four.
Meanwhile, skipper Yobo has vouched for the discipline in the Eagles team.
Players of Super Eagles in recent past have been accused of not showing enough commitment during national team action.
However, Yobo has insisted that indiscipline is a thing of the past with this team.
"I think the discipline level is very high. We have a coach who is an ex-captain of the team and knows what it means to keep a discipline side. We are getting better and the issue of indiscipline in the Eagles does not exist in this team," he said.
The Super Eagles on Friday went through the accreditation process for the tournament with CAF officials conducting the process at the Eagles Ingwanyama Resort and Sports Centre.
The coach Keshi-led side had a closed-door training session and the team are billed to meet with the media today at the Mbombela Stadium in Nelspruit.