A meeting with a specialist next week will determine whether Socceroo Jason Culina plays again this A-League season for Gold Coast United.
Culina was forced to leave the Socceroos' Asian Cup campaign after aggravating a knee injury during the side's 1-1 draw with South Korea last week.
While United initially had high hopes the midfielder would be a factor in their looming A-League finals campaign, they admit his future will hinge on next week's medical assessment.
"He (Culina) weighs his options," Bleiberg told the United website.
"(His options will be) whether it be surgery (now) or whether he can play and do the surgery later on if he can bear it and it's not causing any damage.
"And, the third option, maybe he doesn't need surgery, he has six or seven months lay off."
But Culina remained upbeat.
"I've got an appointment with the specialist next week so it all depends on what they say but I feel good," Culina told The Gold Coast Bulletin newspaper.
Fourth placed United (42pts) are four points behind No.3 Adelaide United and trail No.2 Central Coast by five - but they have a game in hand over each.
United take on Melbourne Victory at AAMI Park on Sunday.