The federation’s spokesman, Ademola Olajire, stated this in response to rumours that Osimhen will not be available for the tournament.
The 22-year-old Napoli striker, who is recovering from facial surgery, is already back in the country from his Italian base.
“We expect Victor [Osimhen] to join up with the rest of the squad at least by January 3.
“It is unnecessary to react to every report in the media about players’ availability or potential non-availability for the tournament.
“But the NFF are confident that our players including Osimhen understand the country’s desire for a fourth continental title.
“It is important to have all our players show the same commitment and ambitious traits as displayed by Osimhen,” Olajire told BBC Sport Africa.