Sydney has shufflde its selected side at the eleventh hour, with rookie Swan Jack Buller ruled out of the club's clash against Adelaide with with injury.

The Swans will be forced to do battle in their all-important, September-shaping fixture in the City of Churches, however, John Longmire will now have access to swingman Aaron Francis, with the former Bomber coming in as coverage.

As of Saturday morning, the Harbour City side has not listed exactly what ailment Buller has been hampered by.

Defender Will Gould has also been brought into Longmire's squad ahead of Saturday night's opening bounce.

With so many finals permutations, both Sydney and Adelaide will be desperate to claim victory in an effort to bolster their chances of earning a pass to the September action.

Longmire's Swans and Matthew Nicks' Crows enter the prime-time fixture at 7th and 12th respectively on the live ladder.

The Swans hold the wood over the Crows in this battle of the birds, with those in red and white reigning supreme in seven of the past 10 match-ups, as well as holding a 3-1 win-loss record at the Adelaide Oval.