The consortium is ready to pay more than £300million for the club, but it is believed Toon owner Mike Ashley want £400million.
Chris Nathaniel, who is working as a consultant for the consortium, said: “These people are not messing about. They are genuine, highly-regarded businessmen in Nigeria who want to make a deal happen.
“They will bring back Kevin Keegan immediately as manager and there will be £75m made available to buy players.
“The interest in the Premier League in Nigeria and the whole of Africa is huge and buying an English club is seen as the next big step for a football-mad country.
“We have made contact with people at Newcastle and let our interest be known but our group has not yet spoken to Mike Ashley himself.
“The ball is in Ashley’s court. The money is there and if he is determined to sell, these men will be round the table with him as soon as he gives the word.
“They realise how important Keegan’s presence is to the fans and they will be delighted to bring him back.”
