Shittu sidelined for Nigeria qualifier
The Nigerian Football Association did not give details of the injury. Nigeria have already had to call up Kalu Uche from Spanish club Almeria in place of injured midfielder Sani Keita.
They must win their final African Zone Group B match in Nairobi on Saturday to stand any chance of qualifying for the 2010 World Cup finals. Nigeria are two points behind leaders Tunisia who travel to Mozambique.