Liam Lawrence is an injury doubt for Portsmouth ahead of Steve Cotterill's return to Fratton Park with Forest.
Midfielder Lawrence limped off with a sore ankle during Tuesday night's goalless draw at Crystal Palace and is still receiving treatment.
Defender Greg Halford missed out at Selhurst Park with the shoulder injury he suffered against Derby the previous weekend but he has a good chance of being passed fit.
Striker Benjani could return to the bench following a hamstring problem while teenage midfielder Abdul Razak is pushing to make his full debut following his recent loan switch from Manchester City.
Cotterill brings his Forest side to the south coast just three weeks after he quit the Pompey hot-seat.
Steve Cotterill could name an unchanged side for the first time as Nottingham Forest manager when he returns to Fratton Park to face former club Portsmouth.
Cotterill, who left Pompey in mid-October after 16 turbulent months in charge on the south coast to succeed Steve McClaren at the City Ground, sustained no new problems as he guided Forest to a third win from his first four games at the helm against Reading in midweek.
After tasting defeat as Reds boss for the first time against Hull, Cotterill made two changes on Tuesday night. Guy Moussi returned from suspension to replace Jonathan Greening in midfield while US striker Robbie Findley was recalled at the expense of Ishmael Miller, who underwent a hernia operation this week.
Chris Cohen (knee) remains a long-term absentee, but fellow midfielder Paul Anderson (hamstring) and forwards Dexter Blackstock (knee) and Garath McCleary (knee) could be back in contention along with Miller shortly after the two-week international break that follows this weekend's matches.