Carlton are hopeful Zac Williams will return to provide a late to boost to their AFL finals bid after scans confirmed he has a high-grade calf strain.
Williams is expected to be sidelined for the next 10-12 weeks, having sustained the injury during the opening quarter of the Blues' 30-point win over GWS on Sunday.
The result moved Michael Voss' side back into the top-four with a 6-3 record ahead of Friday night's clash with Sydney at Marvel Stadium.
On Monday, Carlton head of football Brad Lloyd indicated Williams will be eyeing a return in the latter stages of the home-and-away season.
There had been fears the dashing defender's season would be over if scans had revealed an Achilles tendon injury.
"We took the time to get Zac back to Melbourne and get a scan today to assess the injury fully, which unfortunately has confirmed he will be out of the side for an extended period," Lloyd said.
"Zac is understandably disappointed given the work he's done to get himself playing good football and performing an important role as part of our back six.
"We've had a number of personnel changes over the opening nine rounds but to the players' credit they have adapted and there will be another opportunity for someone to step up and take their chance at senior level."
Williams has played all but one game this season, Voss' first at the helm.
