MELBOURNE, AUSTRALIA - APRIL 6: Liam Jones of the Blues (right) encourages Jacob Weitering of the Blues after Magpies players got stuck into him for giving away a free kick during the 2018 AFL round 03 match between the Carlton Blues and the Collingwood Magpies at the Melbourne Cricket Ground on April 6, 2018 in Melbourne, Australia. (Photo by Adam Trafford/AFL Media/Getty Images)

Carlton veteran Liam Jones has reportedly suffered a season-ending knee injury.

The 30-year-old is a key component of the Blues' backline, a team already struck down by a host of injuries.

Carlton are yet to confirm the extent of the injury or where it was sustained, but it is understood that the club are working through surgery and recovery options for the star back, according to 7 News' Andrew McCormack.

Jones, who has missed just two games so far this season, is signed to the club until at least the end of 2022 and has flourished in David Teague's backline this season.

Elsewhere, the injury list at the 11th-placed Saints continues to rise. Veteran defender James Frawley underwent shoulder surgery earlier this week, ruling him out for the rest of the season.

The 32-year-old has managed just two games for St Kilda since joining on a 12-month contract in early 2021, and his long-term future at the club remains in the air after his latest injury setback.

MELBOURNE, AUSTRALIA - NOVEMBER 27: James Frawley of the Saints speaks to the media during a St. Kilda media opportunity at RSEA Park on November 27, 2020 in Melbourne, Australia. (Photo by Dylan Burns/AFL Photos via Getty Images)

Saints coach Brett Ratten spoke to ABC Sport on Sunday following the club's win over the Swans, confirming no decision had been made on Frawley's future.

"His shoulder's not right so he'll go in for an operation on Monday and we'll sit down and work through what it looks like for next year," Ratten said.

Frawley's injury opens the selection door for injury prone Saint Dan Hannebery to make his much anticipated senior footy return, per AFL.com.au

Hannebery, who has played just 13 games for the Saints since signing in 2019, has been managing a calf complaint but returned to the VFL in July.

MELBOURNE, AUSTRALIA - JUNE 02: Dan Hannebery of Sandringham handballs during the round nine VFL match between Coburg and Sandringham at Piranha Park on June 02, 2019 in Melbourne, Australia. (Photo by Darrian Traynor/Getty Images)

The 30-year-old has played a handful of VFL and club matches since, but the Saints have given no indication that the former Swan will return in their must-win clash against Geelong.