Currently, players can only move as a free agent after spending at least six years at the one club, regardless of age.
Under the new ruling the player will become a free agent for life once they qualify.
The AFL boss said the free agency deal was still to be finalised under the new collective bargaining agreement, with this the only major change.
“Once somebody has moved under free agency I think it’s just logical they become a free agent and can move on three or four year deals if at 31, they want to move under free agency,” McLachlan told 3AW.
“It’s very rare that it’d be used but I think it’s a logical change.”
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