Two Cameroon internationals have said they will not play for the national team until a 15-match ban imposed on captain Samuel Eto'o is lifted.
Jean Makoun and Benoit Angbwa have written to the country's football federation Fecafoot with the ultimatum.
Eto'o was banned for his role in a strike by the national squad in a row over late payment of appearance fees.
"Do not expect to have us in the team so long as the sanctions have not been lifted," they said.
Vice-captain Enoh Eyong received a two-match ban for his role in the affair.
"The decision [to strike] was that of the entire team - our team-mates were just our spokesmen and we formally denounce the sanctions against them," Makoun and Angbwa said in separate but identical letters, sent through their lawyers.
The statement was copied to the Ministry of Sports, who's long-running dispute with Fecafoot was at the root of the problems leading to the original strike.
Makoun plays for Olympiakos in Greece while Angbwa is Eto'o's club colleague at the Russian side Anzhi Makhachkala.
Some fans in Cameroon have also been angered by the ban on Eto'o, which rules him out of qualifying for the 2013 Africa Cup of Nations and most of the preliminary campaign for the World Cup in Brazil 2014.
Planned protests in Yaounde, scheduled for 24 December, were called off after they were banned by the local authorities because of concerns over public order.
Eto'o himself has not challenged the sanction against him.
Fecafoot paid $500,000 compensation to Algeria's football federation for the costs they incurred over a friendly match which had to be called off following the players strike.