"At the moment I'm really struggling to field two fit central defenders against Portsmouth. I've lost Richard Rufus, Gary Rowett, Mark Fish and Hermann Hreidarsson to injuries and now Chris Perry has damaged a toe in training. "I'm just hoping he will be okay to play against Portsmouth on Saturday, while Hreidarsson also has a chance of coming back." Charlton will also be without Graham Stuart, Jason Euell and Kevin Lisbie for what Curbishley anticipates will be a tough match against their relegationthreatened opponents.