Firrito is the equal third-longest-serving player on North's list, his 208-game tally behind only former skipper Brent Harvey (358) and acting skipper Drew Petrie (240).
The 29-year-old has been a mainstay in North's defence for years, but after an indifferent start to 2013 was dropped following North's round 16 loss to the Brisbane Lions.
Injuries have since kept Firrito out of North's team as younger defenders such as Luke and Cameron Delaney have come into the side and impressed.
But Scott said on Thursday the out-of-contract defender, who is set to become an unrestricted free agent at the end of this season, was still in his plans.
"Because Michael Firrito is the heart and soul of this football club, and he personifies the way we play and the way we go about things, it's always going to be an incredibly tough decision when the time comes that he makes the call," Scott said.
"But I think like I do with all players; we'll sit down and discuss their form, their fitness, how they think they're travelling, their motivation to play on and I think we'll come to a mutual decision.
"The player has to have buy in, and I think when you're a player like Michael Firrito that's played well over 200 games, he's earned that right.
"And I still see him in our plans. He's been overcoming injury the last couple of weeks, but I hope he'll play this week in the VFL and push his claims for senior selection (next) week."
PRESS PLAY above to watch the Brad Scott media conference | YouTube
Scott suggested the Roos faced an easier call with 35-year-old Harvey, who has been outstanding since he returned from suspension in round seven.
Although he said North would not sit down with Harvey to discuss his future until the end of this season, Scott was "supremely confident" the veteran midfielder would extend his career into a 19th AFL season.
"You couldn't argue against him at the moment," Scott said.
This Sunday, North travels to AAMI Stadium for a return clash with Adelaide, who dealt the Roos their worst loss of the season in round nine.
Up by 30 points midway through the final quarter in that game, the Roos surrendered five late goals to lose in the dying seconds by one point.
Scott admitted that loss had been bitterly disappointing, but said the Roos took confidence out of their ability to get into a winning position against the Crows.
He also said the Roos had shown last round against Geelong that their ability to stem an opposition team's momentum had improved since round nine.
"I was really pleased last week that when challenged by a very, very good side that we were able to hold up," Scott said.
"What's been the dramatic change, and it's only a small thing but it's a big difference, (is) when the momentum shifted on the weekend we were able to counter."
