Nigeria are considering retiring the No. 4 shirt in honour of their former player and coach Stephen Keshi, who died this week at the age of 54.
Amaju Pinnick, president of the Nigeria Football Federation (NFF), told SuperSport magazine show "Soccer Africa" it is one of many proposals being considered to immortalise Keshi.
Speaking to ESPN FC on Thursday, Pinnick repeated that there are several plans under consideration.
Pinnick said: "A stadium in his home state of Delta State was already going to be named after him even before he died. He visited the stadium with me and was happy about the plans.
"We will also consider retiring the No. 4 jersey that Keshi used during his time as an international player, but that will have to go through the technical committee and, of course, other relevant international bodies like FIFA and CAF would also have to give permission."
Nigeria's Sports Minister Solomon Dalung also said the federal government had plans to honour him.
"He was one of Nigeria's heroes whose contributions to the development of football and Nigeria's sports in general cannot be quantified, and I want to assure Nigerians that government will seek ways to immortalise him," Dalung said in a media statement.