Fifa president Sepp Blatter says he is concerned by the findings of a study.
Former international midfielder Aliou Cisse has been appointed Senegal coach.
Ivory Coast goalkeeper Boubacar Barry has announced his international retirement.
Mali have been crowned the 2015 African Under 17 Champions after a 2:0 victory over South Africa in the final in Niamey on Sunday.
Argentine Hector Cuper is the new coach of Egypt.
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Ghanaian Kwesi Appiah suffered disappointment with Al Khartoum in the Confederation Cup.
DR Congo giants TP Mazembe have signed Roger Assale and Sylvain Gbohouo and Christian Kouame.
Township Rollers warn Kaizer Chiefs
Nottingham Forest FC Mustapha Carayol
Nottingham Forest have signed Middlesbrough winger Mustapha Carayol on two-year deals.
Gambia international Carayol, 27 joins the Championship side on free transfers.
England
Gambia