Sydney Swans defender Aliir Aliir is a late withdrawal from Sunday’s team to play Brisbane and will be replaced with Harrison Marsh.

Head of Football Tom Harley said Aliir was left out of the team for disciplinary reasons.

"It is disappointing and unfortunate that Aliir comes out of the side and Harry Marsh comes in,"

"We had a training session yesterday and it is disappointing that Aliir didn't attend and we can't stand for that as a football club so he has taken full responsibility for that."

"We move on with the game and Harry Marsh comes in as his replacement."

Harley said he was confident Marsh would play the role required against the Lions.

"It was a very minor hamstring strain and we were very cautious with it given he has had some soft tissue history but we are very confident based on the work he has done this season that he can play a role for us this afternoon."