Nottingham Forest are waiting to discover the extent of the injury Simon Cox suffered while on international duty.
Cox was carried off on a stretcher in the final minute of the Republic of Ireland's Tuesday win against Oman on Tuesday evening following a heavy challenge.
Forest have confirmed the striker will be sent for scans to determine how serious the injury is.
Cox moved to the City Ground in the summer from West Brom and the 25-year-old has scored twice in five appearances for Sean O'Driscoll's side.
- Simon Cox
- Nottingham Forest