Career
His participation in an Africa Cup of Nations qualifying game caused controversy in 2011. The Confederation of African Football"s rejection of an appeal from the Namibian Football Association was the subject of an appeal to the Court of Arbitration for Sport (Cas) in December 2011. Namibia had initially appealed to the Confederation of African Football as Zengue was not eligible to play in international fixtures for Les Étalons, their appeal was rejected on a technicality.
Namibia later appealed to the Court of Arbitration for Sport to have CAF"s rejection overturned.
The Court ruled in favour of the African Football Governing body. Zengue made his international début for Burkina Faso against Namibia in a 2012 Africa Cup of Nations qualification match on 26 March 2011.
He played in his first Fédération internationale de football association-organised game in June 2012 versus Congo. Contested eligibility
On 4 June 2011, he played again for Burkina Faso against Namibia.
Burkina Faso coach Paulo Duarte said that the player is eligible as he has a Burkinabé wife which entitles him to citizenship.
Namibian football officials formally complained about Zengue"s participation because it was thought he was not eligible to represent Burkina Faso, as he did not meet the conditions set out in Fédération internationale de football association"s statutes which would have enabled him to become eligible for the Burkina Faso national team On 28 October, the day before the group stage draw for the 2012 Africa Cup of Nations, British Broadcasting Corporation reported that the player was ineligible and the player had not been granted clearance by Fédération internationale de football association. However, CAF chose to dismiss Namibia"s complaint as it was not counter-signed by Burkina Faso"s captain as per article 37.1 of CAF"s statutes. The Namibian FA appealed against CAF"s decision but lost.
The NFA lodged a complaint with the Court of Arbitration for Sport to have CAF"s decision to reject Zengue overturned.
On 10 January 2012, Chemical Abstracts Service released a statement that said Namibia"s appeal had been rejected. A press released by Chemical Abstracts Service stated that Zengue had taken residency in Burkina Faso in 1994, before receiving a Burkinabe nationality certificate in 2006 (whilst a player at Ankaragücü in Turkey) and a Burkinabe passport in March 2011 (the day before his début against Namibia).
At no point did Chemical Abstracts Service decide whether or not Zengue was to be considered eligible for international football with Burkina Faso. In December 2012, Fédération internationale de football association chose to punish Burkina Faso for fielding the ineligible Zengue in their World Cup qualifying game versus The Congo.
Congo were awarded a 3–0 victory and 3 points.