Gabon’s opponents are seeking to continue the fairytale run they had through the qualifiers.
Guinea Bissau is one of the continent’s poorest countries and their preparations have been beset by money problems, including a players’ strike last week.
Burkina Faso and Cameroon clash in the second Group A game at the 40,000-capacity Stade de l'Amitie, both believing a win will put them on course for the quarter-finals.
“If we win this game we are already 50 percent sure to go through,” said Cameroon coach Hugo Broos.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
“There is a lot motivation in our squad to get a positive result,” added Burkina coach Paulo Duarte.
Saturday's matches kick off a three-week odyssey to decide the new African champions with the final in Libreville on Feb. 5.
(Editing by Pritha Sarkar)
