Simon Grayson believes Preston require a more clinical edge despite seeing them beat Notts County 1-0 in the JPT on Tuesday.
Paul Huntington's first-half goal fired Preston to a 1-0 victory over Notts County in the JPT Northern Area semi-final on Tuesday.
Team news for Tuesday's Johnstone's Paint Trophy clash between Notts County and Preston North End at Meadow Lane.
Notts County boss Shaun Derry conceded that Swindon were a class above his side after the Magpies slipped to a 3-0 defeat.
Andy Williams struck twice as Swindon underlined their automatic promotion credentials with a 3-0 win at 10-man Notts County.
Team news for Saturday's League One clash between Notts County and Swindon Town at the County Ground.
Notts County boss Shaun Derry is hoping to keep on-loan Nottingham Forest pair Louis Laing and Stephen McLaughlin at the club.
Walsall will be away in the first leg of their Johnstone's Paint Trophy Northern Area Final against either Preston or Notts County.