Convey missed Reading's 2-1 defeat at Derby last weekend as he returned from international duty just hours before the game.
But after setting up the opening goal in his nation's 2-0 win over El Salvador eight days ago, the Royals are ready to welcome American international Convey back into their team.
The winger's return aside, the Royals are likely to field the same side that took to the field at Pride Park on Saturday. That means Nicky Shorey will start at left-back having today penned a new deal that will keep him with Reading until the summer of 2007.
But Glen Little once more misses out through injury, although Ricky Newman should be on the bench after recovering from a recent injury.
And Reading will be hoping to defeat the Lancashire side who are currently without a manager following the departure of Craig Brown.
Although the Lilywhites beat the Royals at the Madejski Stadium in the cup last season, they lost out to a late Nicky Forster strike in the league, and were thumped 5-1 the year before.
With five first team players sidelined, Preston are likely to struggle to make an impression tomorrow evening.
Marlon Broomes, Callum Davidson and Claude Davis will definitely miss the big match through injury, whilst Paul McKenna and Eddie Lewis are both rated as doubtful for the clash.
Furthermore, skilful forward Ricardo Fuller is no longer with the Deepdale based side as he signed for Portsmouth in the summer.
Probable Reading line-up: Hahnemann; Shorey, Williams, Ingimarsson, Murty; Convey, Sidwell, Harper, Hughes; Little, Forster