Nigerian defender Juwon Oshaniwa claims he is attracting interest from clubs in the UK, including Hearts and Celtic.
Holders Nigeria failed to qualify for the 2015 Africa Cup of Nations after being held to a 2-2 draw by South Africa.
Reading's Hope Akpan will be out for two weeks after dislocating his shoulder during Nigeria's 2-0 win over Congo.
Sky Sports understands the Nigerian FA wants Avram Grant to manage the team during the Africa Cup of Nations.
FIFA has given Nigeria a final chance to avoid a lengthy ban from football - but only if they comply with their demands.
Reading midfielder Hope Akpan has spoken of his delight after making his international debut for Nigeria.