MELBOURNE, AUSTRALIA - AUGUST 11: Nick Vlastuin of the Tigers handballs during the round 21 AFL match between the Richmond Tigers and the Carlton Blues at Melbourne Cricket Ground on August 11, 2019 in Melbourne, Australia. (Photo by Graham Denholm/Getty Images)

Carlton forward Jack Silvagni is set to miss just the one week after avoiding shoulder surgery.

The 23-year-old was subbed off in last Thursday's loss to Richmond and looked to be facing another lengthy stint on the sidelines.

However, the latest diagnosis on Silvagni's troubled shoulder suggests the luckless forward will miss this week's clash against Collingwood and will be in line to face Fremantle in Round 3.

“He settled down better than we thought he would at the time, which is great,” Blues director of high performance Andrew Russell told the club website.

"He was pretty sore at the time, he definitely couldn’t continue playing.

“We think that he’ll probably miss a week."

In further good news for the Blues, speedster Jack Martin will be available to face Collingwood on Thursday after overcoming a calf complaint.

Star recruit Zac Williams will join Martin as inclusions for David Teague's side after being suspended for Round 1.

Meanwhile, Richmond and Geelong will both seeking the approval of the AFL to have injured star players feature for Round 2.

Tigers defender Nick Vlastuin and Geelong midfielder Sam Menegola were both subbed off for their respective sides in Round 1 and will require approval of their eligibility for selection.

Vlastuin looks to have overcome a corked knee that was sustained midway through Richmond's season opener and is believed to be preparing for selection ahead of the Tigers' Round 2 clash against Hawthorn.

Menegola damaged his AC joint during his side's defeat to Adelaide on Saturday and will have his fitness assessed in the coming days, with Geelong confident the wingman remains in contention for selection.

“Menegola hasn’t been ruled out of Friday night’s game as yet and we will wait to see what the next few days bring,” general manager of football Simon Lloyd said.

The new sub rule means a club doctor must believe an injury places a player unfit to continue in the match and “is reasonably determined the player will be medically unfit to participate in any match for at least the next 12 days”.