Scott told SEN on Monday morning the current rule, where teams play with one substitute and three interchange players, often forced club doctors to make decisions on injured players' ability to return to the field under suffocating pressure.
"I think that it's inevitable that there will be a minor tweak to the way we do things at the moment," Scott said.
"An example in last night's (North Melbourne-Geelong) game was when Andrew Mackie got injured, Geelong took a long, long time to assess him to work out whether they needed to sub him.
"It was in the second quarter and obviously they didn't want to make the sub if Mackie was going to be right to come on. So I wouldn't be surprised if in the future the AFL potentially looked at having more subs, just so the doctors are under less pressure to make a call.
"You could imagine the pressure the doctors are under when a coach clearly wants to get a player back on the ground because you're one short. But the doctor has got to make the right call by the player."
In another example from round three, Collingwood midfielder Luke Ball suffered a right knee injury late in the first term of last Friday night's game against Carlton.
Ball's teammate Ben Reid was substituted off the ground just minutes later with a thigh injury and Ball played on with his knee strapped. But Ball's night ended when he fell and again hurt his knee midway through the second quarter.
The former Saint was later diagnosed with a torn anterior cruciate ligament, which will sideline him for the rest of this season. In the press release announcing that bad news, Collingwood wrote that Ball had ruptured his ACL in his second quarter fall.
Last week, AFL football operations general manager Adrian Anderson told the Herald Sun the League would consider allowing a club to temporarily activate its substitute while its doctor assessed a player with suspected concussion.
Under a proposal the AFL is considering from Geelong, club doctors would have 20 minutes to assess players for concussion and if a player was ruled fit to return to the field, his club would be allowed to put their substitute back on the bench and activate him again later in the game.
Anderson said the AFL would have to consider Geelong's proposal more carefully before putting it before the AFL Commission for consideration.
"We have to consider carefully the question of whether it could be abused," Anderson said.
Scott acknowledged Anderson was investigating the current problems with the substitute rule and was hopeful of a "solution" at the end of the year.
Nick Bowen is a reporter with AFL Media. Follow him on Twitter @AFL_Nick
The views in this article are those of the author and not necessarily those of the AFL or its clubs.
