Brian Laws is able to add John Guidetti to his squad for Saturday's televised game against Derby County but we could be without both Martin Paterson and Chris Eagles through injury. Chris Eagles - doubtful with a back injuryPaterson returned for the game at Norwich three weeks ago and scored both goals in a 2-2 draw. Unfortunately he suffered a thigh injury in the home clash against Doncaster three days later and was substituted at half time.He's since missed the games against Watford and Coventry and is still very much a doubt for Saturday as is Chris Eagles with his long running back problem. It was evident early in the season when he was on the bench and receiving treatment and none more so than last Saturday when he was with the physio until seconds before the kick off at the Ricoh.The good news is the signing of Guidetti and the return to full fitness of Andre Bikey. Laws has said: "Andre is fully fit now, ready to go and in a great frame of mind and the final decision to let Leon go on loan was based on the fact he is now fit."Andre has been a shining light at centre half this season with the way he has played. He is, in my view, by far and away the best centre half in this division and it's pleasing that I know his mindset is good."It's certainly tempting to throw him back in on Saturday. When you have a player of his calibre, it's something you have to seriously look at, but that's great credit to the other players as well for keeping Andre out."