MILLWALL will be reported to FIFA by the Nigerian Football Federation if they do not allow captain Danny Shittu to take part in the African Cup of Nations.
Shittu is in the Super Eagles' preliminary 32-man squad for the finals tournament, which is being hosted in South Africa next month, but Kenny Jackett expects the defender to reject his call up.
However, Nigeria say they will make an official complaint to the game's governing body if Shittu does not report for duty at a training camp in Portugal on January 4.
If they follow through with their threat, FIFA could ban Shittu from playing for Millwall until Nigeria's involvement in the tournament ends.
It is unusual for national federations to make official complaints but there are some notable past examples. Mark Viduka was banned when at Leeds United for skipping duty with Australia in 2004.
Whether Shittu wants to play for his country or not has no bearing on the situation. FIFA rules say "a restriction on playing for the club will be increased if the player does not comply with the call up."
Nigeria manager Stephen Keshi said: "The rules are very clear about when they should be released for international assignments if their country so desires."
Chris Green, an executive committee member of the NFF, said: "None of the clubs have informed us that the players are not coming. It's a big joke.
"I've read about Shittu in the papers where his manager is saying he won't come. The player hasn't been quoted as saying he won't honour the call.
"As far as we are concerned, they will report as scheduled for our camp. We know the rules. They are very clear and unambiguous. If they don't release the players, we will apply the rules."