Crocked Ki ruled out for a month

The South Korea midfielder suffered the injury during Saturday's 1-1 Scottish Premier League draw against Falkirk. Glenn Loovens is expected to recover from a stomach problem for the fourth-round tie, but Danny Fox (groin) faces at least a week on the sidelines and Stephen McManus (calf) is doubtful. Paul McGowan is suspended, Landry NGuemo is at the African Nations Cup, while Scott McDonald, Scott Brown and Shaun Maloney are all still injured. Hoops (from): Boruc, Loovens, O'Dea, Hinkel, Fortune, McGeady, Crosas, Samaras, Zheng, McDonald, McGinn, Wilson, Caddis, Zaluska, Forrest, McCourt, Thompson, Mizuno.