R's vice-captain Gavin Mahon and free-scoring defender Fitz Hall have both been passed fit for Saturday's trip to Sheffield United.
The duo were left out of Tuesday's Carling Cup victory over Swindon with slight niggles, but both players are set to return to the R's matchday squad against the Blades.
Radek Cerny and Lee Camp will once again be vying for the goalkeeper's jersey, while Matt Connolly and Peter Ramage will do battle for the right back berth.
In midfield, Real Madrid loanee Daniel Parejo could make his first start in the Championship, while Angelo Balanta will be hopeful of retaining his place in attack, after netting the R's opening goal against the Robins in midweek.
The squad in full is: Cerny, Camp, Ramage, Connolly, Stewart, Hall, Gorkss, Delaney, Leigertwood, Mahon, Ledesma, Cook, Ainsworth, Parejo, Blackstock, Alberti, Di Carmine, Agyemang, Balanta.
