Sydney co-captain Leo Barry admits the Swans have let their famed disciplinary standards slip.

Barry Hall and Amon Buchanan have both incurred long suspensions this year, while the match review panel also finally caught up with two-time Brownlow medallist Adam Goodes last month, ending his streak of consecutive matches at 204.

The Swans have enjoyed a relatively good disciplinary record in recent years, but already this season they have incurred more missed matches through suspension than any previous campaign under coach Paul Roos, who took over in 2002.

"It is an area we have let slip, hopefully the rest of the season we can still attack the man, but within the rules of the game," said Barry.

"In the previous season we haven't had any reports, but it's just sort of crept in this season, so it's an area which we have to address.

"Everyone is really aware of it, the fact that you let your teammates down if you are suspended, so hopefully we've seen the end of it.

"Our guys must get back to really attacking the ball and still being aggressive towards the man, but it's a fine line being aggressive and copping a few weeks."

Asked if Hall's two suspensions could cost the Swans a chance of winning the premiership, Barry replied: "That's pretty hard to say, that's something you can't really measure. We've been able to win games while Hally wasn't playing."

One of Sydney's longest serving players, 31-year-old Barry suggested he was keen to back up for a 15th season.

"Over the next couple of weeks, I'll probably make a decision on whether I will play or not," Barry said.

"I'm still feeling really good physically, so hopefully over the next month we will have a pretty good indication."

While he will consider a combination of physical and motivational factors, Barry felt his body could still cope with the rigours of another AFL campaign.

"I feel great, really fresh and I'm still contributing to the team ... I still feel that I want to continue playing," Barry said.

He is likely to again square off against Carlton spearhead Brendan Fevola in Sunday's clash at Telstra Dome.

He regarded Fevola as a "huge challenge", but wasn't sure whether he would try and verbally unsettle the volatile Blues forward after St Kilda fullback Max Hudghton appeared to enjoy some success in that area last weekend.

"It's something that might be used, we generally don't do it but it was pretty effective for Max last week and put him (Fevola) off his game a bit, so that might be something to talk about this week," he said.

Barry was optimistic halfback Tadhg Kennelly would be fit after dislocating his shoulder last weekend.

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