Scott told reporters on Monday Todd Goldstein, Lindsay Thomas, Luke McDonald and Michael Firrito, who were all rested from the Dees clash, and Levi Greenwood, who was sidelined with a minor calf injury, would be fit to take on the Bombers.
But that did not mean they would automatically be selected.
"No one's definite this week. We've got some really good problems and things to work through, but we'll put the side in that we think is best equipped to get the job done against Essendon," the Roos coach said.
"No one's guaranteed and we're going to have a long series of meetings this week I suspect.
"(The players rested against Melbourne) are all available. Whether they all get picked is another story."
The Roos emerged from last round's win over Melbourne with some injury concerns, with forward Leigh Adams (concussion) and key defenders Lachlan Hansen (hip) and Nathan Grima (corked quad) all hurt during the 30-point win.
Scott was confident Adams and Grima would play against the Bombers and said Hansen, who returned from three weeks on the sidelines against Melbourne and lasted only half a game, had yet to be ruled out.
"Leigh should be fine, he's a little warrior," Scott said.
"He gets knocked around a fair bit so we'll have to be obviously very careful with him and make sure that we treat him appropriately and make sure that he's right to go.
"But I suspect we won't know that until Thursday or even Friday.
"Lachy pulled up a bit sore again, so we'll assess him through the week.
"But he's a pretty important player to us. He has shown he's an important part of our back half and if he's fit and right to go we'll select him, if not we won't."