The Australian was substituted before half-time in yesterday's goalless draw at Hull with a groin strain.

Manager Sam Allardyce took the player off a s a precaution and admits he is unlikely to risk him at St Andrew's.

Allardyce said: "If you leave him on it extends the injury even more or he could tear it rather than feel it tight.

"We can probably rule him out for Birmingham but I don't think any longer than that."