Gary Rohan, the forgotten man of Sydney's well-stocked injured brigade, is a realistic chance of returning for the reigning AFL premiers before the season ends.

Swans coach John Longmire revealed on Monday that Rohan, who broke his leg in round four last year and only returned to the reserves in July, had almost progressed to the point where he was in the mix for senior selection.

"He's a realistic chance before the end of the season. I'm not sure whether he'll play this week," Longmire said.

"He's come off 18 months (on the sidelines), so it's pretty hard to pick it up in three or four games (in the seconds).

"He's now getting over those soreness-type issues at the back of games and now it's more about coaching ... making sure he's playing the sort of footy that we want him to play."

Rohan, fellow speedster Lewis Jetta (shin), key forward Sam Reid (quad), utility Lewis Roberts-Thomson (knee) and superstar Adam Goodes (knee) are all a chance to return before September.

All of them loom as potential aces up Longmire's sleeve when the Swans start a tough run to the finals next week.

Sydney host St Kilda at the SCG on Sunday, then face second-placed Geelong (away) and ladder-leading Hawthorn (home at ANZ Stadium).

Longmire suggested he was only thinking as far ahead as the Saints.

"When they (the Swans' injured stars) return to the training track with the rest of the group in the team environment, that's when I start to think about when we're going to integrate them," he said.

"At the moment there's probably no point looking too far ahead, because I can't change when they come back. I can only deal with what I've got for each particular game on the weekend."

The Swans suffered their second defeat in 11 weeks on Saturday night, when Collingwood ended their six-match winning streak with a 29-point win at ANZ Stadium.

"Coming off the type of loss we had on the weekend allows us to - hopefully - re-focus pretty quickly," Longmire said.

"...They'd certainly be disappointed with their efforts, both individually and us as a team, so it's not a case of us standing there and having stern words with them."