HITC Sport understands Cardiff have agreed a deal for the Rotherham defender.
The Millers midfielder is recovering after a strong tackle from Kalvin Phillips.
The New York Stadium hosts an all-Yorkshire clash on Saturday evening.
The former Football League manager has predicted an away victory for Nottingham Forest as they travel to Rotherham
Rotherham returned to Championship football with a hard fought 2-2 draw against Bristol City on the weekend.
The forward was in excellent form for the Whites during the month.
Was the utility player aiming his frustrations at Neil Redfearn?
The Birmingham City man suggested a sparring session with the newly crowned British and Commonwealth Heavyweight Boxing champion.
Greg Halford has moved to Birmingham City on loan from Rotherham United.
The utility man is now captain at this weekend's opposition Rotherham United.
According to reports, Nottingham Forest defender Greg Halford will join Brighton and Hove Albion.
Amid interest from Bolton Wanderers, Greg Halford could be allowed to leave Nottingham Forest on loan this week.