Nigerian defender Joseph Yobo looks on before the international friendly football match between Nigeria and Scotland at Craven Cottage in London on May 28, 2014, ahead of the FIFA World Cup . AFP PHOTO/GLYN KIRK

Nigeria's goalkeeper Austin Ejide looks on before the international friendly football match between Nigeria and Scotland at Craven Cottage in London on May 28, 2014, ahead of the FIFA World Cup . AFP PHOTO/GLYN KIRK

Nigerian striker Shola Ameobi looks on before the international friendly football match between Nigeria and Scotland at Craven Cottage in London on May 28, 2014, ahead of the FIFA World Cup . AFP PHOTO/GLYN KIRK

Nigerian defender Kunle Odunlami looks on before the international friendly football match between Nigeria and Scotland at Craven Cottage in London on May 28, 2014, ahead of the FIFA World Cup . AFP PHOTO/GLYN KIRK

Nigerian midfielder Reuben Gabriel looks on before the international friendly football match between Nigeria and Scotland at Craven Cottage in London on May 28, 2014, ahead of the FIFA World Cup . AFP PHOTO/GLYN KIRK

Nigerian midfielder Joel Obi looks on before the international friendly football match between Nigeria and Scotland at Craven Cottage in London on May 28, 2014, ahead of the FIFA World Cup . AFP PHOTO/GLYN KIRK

Nigerian defender Elderson Echiejile looks on before the international friendly football match between Nigeria and Scotland at Craven Cottage in London on May 28, 2014, ahead of the FIFA World Cup . AFP PHOTO/GLYN KIRK

Nigerian midfielder Ejike Uzoenyi looks on before the international friendly football match between Nigeria and Scotland at Craven Cottage in London on May 28, 2014, ahead of the FIFA World Cup . AFP PHOTO/GLYN KIRK

Nigerian striker Michael Uchebo looks on before the international friendly football match between Nigeria and Scotland at Craven Cottage in London on May 28, 2014, ahead of the FIFA World Cup . AFP PHOTO/GLYN KIRK

Nigerian defender Azubuike Egwuekwe looks on before the international friendly football match between Nigeria and Scotland at Craven Cottage in London on May 28, 2014, ahead of the FIFA World Cup . AFP PHOTO/GLYN KIRK

Nigeria's (top L-R) midfielder John Obi Mikel, defender Kenneth Omeruo, forward Brown Ideye, forward Emmanuel Emenike, defender Godfrey Oboabona, defender Efe Ambrose, (bottom L-R) midfielder Victor Moses, defender Uwa Echiejile, goalkeeper Vincent Enyeama, midfielder Ogenyi Onazi and midfielder Ahmed Musa pose for a group picture before the 2014 FIFA World Cup African zone second leg play-off football match between Nigeria and Ethiopia in Calabar on November 16, 2013. Nigeria won 2-0. AFP PHOTO/PIUS UTOMI EKPEI

Nigeria national football team's striker Obinna Nsofor poses on November 17, 2013 in Calabar. AFP PHOTO/PIUS UTOMI EKPEI

Nigeria national football team's striker Foluwashola Ameobi poses on November 17, 2013 in Calabar. AFP PHOTO/PIUS UTOMI EKPEI

Nigeria national football team's striker Reuben Gabriel poses on November 17, 2013 in Calabar. AFP PHOTO/PIUS UTOMI EKPEI

Nigeria national football team's forward Nnamdi Oduamadi poses on November 17, 2013 in Calabar. AFP PHOTO/PIUS UTOMI EKPEI

Nigeria national football team's midfielder Sunday Mba poses on November 17, 2013 in Calabar. AFP PHOTO/PIUS UTOMI EKPEI

Nigeria national football team's striker Bright Dike poses on November 17, 2013 in Calabar. AFP PHOTO/PIUS UTOMI EKPEI

Nigeria national football team's goalkeeper Austine Ejide poses on November 17, 2013 in Calabar. AFP PHOTO/PIUS UTOMI EKPEI

Nigeria national football team's goalkeeper Chigozie Agbim poses on November 17, 2013 in Calabar. AFP PHOTO/PIUS UTOMI EKPEI

Nigeria national football team's defender Azubuike Egwuekwe poses on November 17, 2013 in Calabar. AFP PHOTO/PIUS UTOMI EKPEI