Rooney replaced Hesky in the last 10 minutes of Saturday's game, and some people has thought he would be handed his full debut. However, it now looks likely that former Everton striker Francis Jeffers will start should Heskey not be fit.
"I think Wayne Rooney is ready but only part-time," Said Eriksson. "I don't think we should expect him to come in and resolve a game against Turkey. It could happen - who knows - if he comes on, as he's physically strong, good on the ball, quick and he scores goals. He might be good enough to start but we'll see. Let me think about it but maybe starting him isn't fair on him.
"Sometimes I am accused for picking him in the squad and suddenly people want him to play from the start. I don't know if I'm too cautious. He deserves to be in the squad and let's see what happens on Wednesday.
"From what I see of him in training and when he came on against Australia and Liechtenstein, he's doing okay. He doesn't seem to be worried or nervous."
The news, whilst dissapointing, will please David Moyes, who has been worried that Rooney may be damaged by playing too many games.