Gabriel Zakuani is back in contention for the trip to the Midlands after recovering from a groin problem and Charlie Lee is also vying for a starting role.
Lee had been sidelined with a dead leg but returned to the bench for Tuesday night's match against relegation rivals Ipswich.
Paul Coutts is rated doubtful with a shoulder injury and could miss out.
The Posh are rooted to the foot of the table going into this weekend's match and have yet to win away from home in the league this season.
However, they can close to within two points of 20th-placed Coventry if they claim victory at the Ricoh Arena.