Catalan Dragons scrum-half Scott Dureau faces an indefinite spell out of the game after undergoing surgery on a tumour behind his eye.
The Australian had an operation on Wednesday and his club say the tumour was removed without any complications.
"It's bad news that affects the club in its entirety but we need to be united and strong and overcome it as a team," said coach Laurent Frayssinous.
"Scott must focus on his health and we want to express our support to Scott and his family."
Dureau joined the Dragons from Newcastle Knights and was named in the 2011 and 2012 Super League Dream Teams.