Each squad can contain a maximum of 21 players.[3]
Draw
Procedure to be confirmed. The eight teams will be drawn into two groups of four teams. The hosts will be seeded in Group A, while the title holders (or the qualified team with the best result in the previous edition) will be seeded in Group B.[3]
Group stage
The top two teams of each group advance to the semi-finals and qualify for the 2019 FIFA U-20 World Cup.
Tiebreakers
Teams are ranked according to points (3 points for a win, 1 point for a draw, 0 points for a loss), and if tied on points, the following tiebreaking criteria are applied, in the order given, to determine the rankings (Regulations Article 71):[3]
Goals scored in head-to-head matches among tied teams;
If more than two teams are tied, and after applying all head-to-head criteria above, a subset of teams are still tied, all head-to-head criteria above are reapplied exclusively to this subset of teams;
First match(es) will be played on 3 February 2019. Source: CAF Rules for classification: Group stage tiebreakers
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Knockout stage
In the knockout stage, extra time and penalty shoot-out are used to decide the winner if necessary, except for the third place match where penalty shoot-out (no extra time) is used to decide the winner if necessary (Regulations Article 72).[3]