Debut for Diarra at Fratton Park

Portsmouth are set to give new signing Lassana Diarra his debut in midfield at home to Barclays Premier League bottom team Derby at Fratton Park and right-back Glen Johnson is expected to return after a hamstring strain.

Frenchman Arnold Mvuemba is expected to make way for his compatriot while Johnson looks ready to replace Noe Pamarot in defence.