Pompey without McGuire
Portsmouth will be without on-loan striker Chris McGuire as they attempt to stave off relegation for at least another week against Derby.
McGuire has scored three goals in 10 matches since joining Pompey from Pride Park in March, but he is ineligible to face his parent club.
One potential replacement, Luca Scapuzzi, is also ruled out as he has gone back to Manchester City having failed to make an impact during his loan spell.
Winger Kelvin Etuhu may come back after missing Tuesday's win over Crystal Palace due to a family bereavement, otherwise Marco Futacs or youngster Ashley Harris - who has yet to make his full debut - could start.
Defender Tal Ben Haim is still struggling with a calf injury and is not expected to figure.