The Austrian has started all four matches since signing earlier this month from head coach Gerhard Struber’s former club Wolfsberger.
Struber said: “He has a swollen knee. For Saturday it is too early and it would be high risk.”
Midfielder Mike Bahre returned to training this week after illness which caused him to miss the last three games.
Struber said: “For about ten days he had a fever and he needs time to get his energy back.
“He has looked good in training. Maybe he is in the squad but it is probably too early.”