Ulster prop Gareth Milasinovich is set to miss most of his debut season with the province.
The 26-year-old has suffered a knee ligament tear in pre-season training.
He will need to undergo surgery to repair the issue.
Ulster say the former Worcester Warriors player will be sidelined for around nine months.
Unfortunate news for Gareth Milasinovich, who sustained an ACL tear in training.
Gareth has been scheduled for surgery to have this repaired and he will be sidelined for approximately nine months.
Wishing him a speedy recovery! pic.twitter.com/s3ugyy4xLc— Ulster Rugby (@UlsterRugby) July 17, 2019