Cameroon International, Joel Matip of Schalke 04 would not be part of the squad that takes on Cape Verde on September 8.
The 21 year old central defender sustained an injury on his knee at the 28th minute of play in an encounter of the German Championship in which Schalke 04 beat Audsburg 3-1.
Information from the medical staff of the club, Gelsenkirchen indicates that the striker would be off the pitch for two to three weeks.
Matip has been in top form forcing his team mate, Benedikt Howedes German International to the bench at the start of the season.
The winner of the German and Super German Cups was called up by Coach Denis Lavagne in the 23 man squad to for the last qualifier round of the African Nations Cup to be player this week end.
The team goes to camp in Dakar-Senegal today where they would train for two days before moving to Cape Verde on September 6.