FC Abuja, based in the capital city of Nigeria, last played in the Nigeria Premier League during the 2008-2009 season. At the time, the key players were Anthony Ujah (1. FSV Mainz 05, Germany), Dele Olorundara (Sunshine Stars FC) and Ifeanyi Okoye (Enyimba FC).
According to http://www.nigerianationalleague.com/, FC Abuja ended the season as number 6 of 9 teams in “Division A” of the Nigeria National League 2012. The club scored 11 goals during their 16 matches. I’ve been able to find the scorer of eight of these goals.
Awalu Mohammed, who I believe is a key player, was part of the FC Abuja team that played at top level in 2008-2009. In March 2011, Mohammed was banned for almost a year by the Nigeria Football Federation, apparently for indiscipline. His teammate Avoka Agboyi received the same ban but has been a regular starter for FC Abuja during the Nigeria National League 2012. Agboyi was actually part of the Nigeria B national football team during 2009.
Austin Igenepo, another key player, was part of the Nigeria U-23 national football team during 2011.
According to Daily Trust, Christopher Utung joined Rangers International FC before the current season. As far as I know, this transfer never took place and I believe Utung is a key player for FC Abuja.
In February 2012, Felix Yakubu and Emmanuel Isa, both players of FC Abuja, were named in the squad of the Nigeria U-17 national football team. Felix Yakubu is an unknown player to me but Isa scored at least one goal during the season.
In general, it is very difficult to find information about the players of FC Abuja. I have been able to find the following players in addition to the ones already mentioned: Chibuzor Anyanwu, Godwin Bemshima, Richard Onunaku Nnadozie, and Justice Zacharia. I also have a theory that Friday Achimugwu, formerly of Akwa United FC and Lobi Stars FC, is the goalkeeper at the club.