Striker Robert Earnshaw picked up a slight hamstring injury in the draw with Millwall at the weekend and is a concern ahead of the Deepdale encounter.
Paul Anderson, who replaced Earnshaw on Saturday, will start if the Wales international is ruled out.
Full-back Chris Gunter is back in contention for a starting place after completing a three-match ban and may replace on-loan Chelsea defender Ryan Bertrand.
Dexter Blackstock's late goal at the weekend is likely to keep him in the team despite his penalty miss and after four consecutive 1-1 draws, Davies may be tempted to field more firepower in order for his side to pick up their first win of the season.
