Watford's Emmanuel Dennis and fellow striker Victor Osimhen have both dropped out of Nigeria's squad for the Africa Cup of Nations, which begins on 9 January in Cameroon.
The Hornets have reportedly refused to release Dennis, who has scored eight Premier League goals this season, while Osimhen has been ruled out following a positive Covid-19 test.
The 23-year-old Napoli striker is also still recovering from facial fractures which he sustained in November, an injury which was initially expected to rule him out of the tournament.
A statement from the Nigeria Football Federation (NFF) said Dennis had been excused from duty because Watford were "baring fangs".