Sydney pair Ted Richards and Tom Papley will have to pass fitness tests in the coming days to prove their availability for Friday night's clash against North.

Richards copped a heavy knock last week against Hawthorn, leaving the field soon after.

“Ted Richards obviously suffered concussion early on in the piece in a really courageous mark,” Swans' General Manager of Football Tom Harley told the club's website.

“We take concussion extremely seriously, so we are monitoring Ted very closely at the moment.

“We haven’t made a decision ... Ted will be involved in that decision so it is a wait and see for Ted.”

Papley missed last week's game due to shin soreness.

"We will test him again but we are not going to take any risks with our players, especially our younger players,” Harley said.

“Being a young first-year player it has been a significant step up in intensity for him, so he is a test going into this Friday night’s game.”

Sam Reid is also set to make his return, but it remains to be seen whether that's via the NEAFL or the AFL.