Sydney stars Jeremy Laidler and Ted Richards will both battle to prove their fitness at training ahead of the Swans AFL clash with the Western Bulldogs.
Laidler missed the Swans' last match against Melbourne two weeks ago with a minor knee injury, but will still require to pass a fitness test on Thursday to be named to play on Saturday.
"He hasn't really joined in for the past week with the bye," Swans midfielder Josh Kennedy told Fox Sports News.
"They've given him a bit of a rest, but he'll have a crack today and hopefully get through."
Meanwhile veteran defender Richards could still be set for a second game in the NEAFL competition as he aims to overcome a long-term concussion issue.
Richards returned through the Swans reserves two weeks ago after missing a month due to a heavy knock in the club's 14-point win over Hawthorn in round nine.
And coach John Longmire is still unsure if he is ready for a return to the top grade.
"We'll see how we go today then we'll make a decision tonight whether he has played enough," Longmire told Sky Sports Radio.