"We are hoping Griff will be available for Saturday. He should give us another body and allow Sam Wood to move forward," Scott said to Millers Player.
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"Evo said last Thursday that he was 100% fit, he trained very well on the Friday but when he came into the game (against Swindon) he was struggling with an injury.
"It is the case of making sure he is right mentally as well as physically, if he doesn't think that he is right to play then there is no point in playing him. If he tells us he is okay then we can only go on what we see and what he tells us. We need 11 players playing to their full potential every week and he hasn't trained this week yet, he has done some running so we will asses him again."
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Scott added: "They (Vale) are not on a great run but they have been playing pretty well and by all accounts they should have won last week comfortably. They have some good players and they have had some injuries recently but they are coming back."