The Australian midfielder collected his fifth booking of the season in last weekend's 2-2 draw against Blackpool and therefore serves a one-match suspension.
Jonathan Williams is back in training after a groin injury and would be a potential replacement, but he is not expected to be in contention for a couple of weeks.
Andre Moritz, Stuart O'Keefe and David Wright are other options to step into midfield for boss Ian Holloway.
Defender Joel Ward could return to the starting line-up after he missed out against the Seasiders through illness.
Club captain Paddy McCarthy remains on the sidelines with the groin injury which has kept him out all season.