The Australian goalkeeper has missed the last nine games with a knee injury but played for 90 minutes for the reserves in midweek and could travel with the squad.
Manager Brian McDermott, who turns 50 on Friday, is taking a 24-man squad for the trip north as they are staying in Nottingham after the game ahead of the trip to Scunthorpe on Tuesday.
Also hoping to be in the bumper squad are captain Matt Mills, defender Alex Pearce and striker Noel Hunt.
Mills (groin), Pearce (thigh) and Hunt (foot) also featured in the 5-0 reserve win over Northampton on Wednesday and could be involved.
A sixth straight win at the City Ground would put the Royals six points clear of Forest in the final play-off place with just six games left.
Source: PA
Source: PA