Port Adelaide is reportedly prepared to walk away from the SANFL in 2025 as they approach the league about speeding up the process for a national reserves competition.
Port Adelaide has cited their frustration with the SANFL's rules as they feel it hinders the development of their players.
As per the SANFL's rules, for AFL-listed players to qualify for SANFL League finals, they must play a higher percentage of SANFL games than AFL games throughout the year and at least three SANFL games after the halfway point of the season.
However in the VFL, AFL-listed players must have played at least six VFL games and no more than 12 AFL games in order to qualify for finals.
9 News has reported next year could be the club's final year in the competition which would end a partnership of nearly 150 years between Port Adelaide and the SANFL, which includes 36 premierships.
Only four of the 18 AFL clubs have reserves sides outside of the VFL, with Port Adelaide, Fremantle and West Coast all set to support a national reserves side, whilst Adelaide's stance is unclear.
Both the Magpies and the Crows are contracted to SANFL until 2028 and breaking that contract would likely have financial implications.