SYDNEY midfielder Dan Hannebery could add further star power to John Longmire's side for Sunday's huge clash with Port Adelaide, after playing his first game of the year last week. 

Hannebery is making his way back from a pre-season calf injury and despite training with the main group in the lead up to Sunday's round one win over West Coast, was overlooked and remained in Sydney to play a scratch match against the Swans academy last Friday night.

Longmire said the three-time All Australian was close to facing the Eagles, but his lack of match conditioning was the major factor in ruling him out of the season opener.

The Swans will train on Wednesday and Friday, and Longmire said all signs were pointing towards Hannebery being available for the Power game at the SCG.

"He got through and pulled up really well, so we've just got to make a decision on whether he's done enough to play seniors this week," the coach said.

"Most importantly his GPS numbers were terrific, he felt great, and that was the next step up from where he's been in a training senses for the last few weeks.

"He's done a lot of work training-wise so to get him into a game situation and have him come through that and feeling confident, was a good sign for him.

"We know he's a class player and if he gets through training he's certainly in the frame." 

Tall forward Sam Reid could also be available for round two after being a late withdrawal against West Coast with hamstring tightness, although he seems less of a chance than Hannebery.

Reid won't train with the main group at the SCG on Wednesday and is still restricted to a running program, meaning he might run out of time to prove his fitness for Sunday's game. 

Fellow forward Gary Rohan is a chance to miss another match as he awaits the birth of twins, while key defender Aliir Aliir has been ruled out as he continues his recovery from an ankle injury. 

The Power have their own worries with reigning club champion Paddy Ryder set to miss 4-6 weeks with an Achilles issue, but they do receive a handy boost with Robbie Gray - who won the previous three John Cahill medals at Port - back from suspension. 

"They're a very talented team, they had 11-odd players that have played over 100 games (in the team) on the weekend," Longmire said of the Power. 

"They've got one of, if not the most talented lists, with the most depth, in the competition at the moment. 

"The way they recruited over summer was very much (about) trying to get experienced players in, and they've got great young players developing underneath as well. 

"We saw them play well on the weekend and play a superb game with all of those recruits playing well, so it's going to be a cracking game."