Sydney had a closed session on Wednesday, with injured duo Callum Mills and Jarrad McVeigh hitting the track, pressing their case for a return.
However, Aliir failed to train. The defender suffered a medial ligament strain during the Swans’ win over Geelong in the preliminary final on Friday night and has been unable to recover in time.
“Aliir has done all he could to give himself a chance to play on Saturday. Unfortunately he was unable to complete training and therefore can’t be considered for selection this week.” Sydney head of football Tom Harley said.
“It’s always a tough situation for players facing some uncertainty over their fitness ahead of a game. Aliir is a young man of outstanding character and a bright future and he will be supporting the team on the weekend.”