Sydney Swans midfielder George Hewett joins a long list of Swans players on the sidelines, with the 24-year ruled old out for a significant period due to a back injury.

Hewett has a bulging disc in his back which will see him out of action for 6-8 weeks.

“George has had a back issue for most of this year but it blew up during the course of the game and he will go in for an operation next week,” Longmire said.

“He was getting back into some really good form so it’s unfortunate we have lost him for a significant amount of time.”

It's another injury blow for the Swans with Hewett joining a long list of players currently on the injury list including senior players Lance Franklin and Josh Kennedy as well as Isaac Heeney who has been ruled out for the remainder of the season.