The Steelmen were without a game at the weekend but that didn’t stop Gary Mills from making further changes to his squad.
Striker Callum Ball’s contract was terminated by mutual consent and that news was followed by the arrival of experienced midfielder Phil Trainer.
It remains to be seen whether Trainer and fellow new arrival Stefan Moore are handed the debuts in the county competition as the Steelmen head to United Counties League Premier Division side Cogenhoe United.
Kettering Town are also involved in the last eight and face an intriguing test as they take on UCL Premier Division leaders Peterborough Sports, who have suffered just two defeats in the league this season.
The Poppies go into the clash on the back of a much-needed 7-0 victory at St Ives Town in the Evo-Stik Southern League Premier Division on Saturday as Spencer Weir-Daley scored four goals for the second successive weekend after a similar haul in the 5-1 win over Market Drayton Town in the Buildbase FA Trophy.
Desborough Town and Wellingborough Town are also vying to reach the semi-finals of the Hillier Cup tonight.
Ar Tarn entertain fellow UCL side Sileby Rangers at the Waterworks Field while the Doughboys face a tough trip to take on Vanarama National League side Brackley Town, who drew 2-2 at Gillingham in the first round of the Emirates FA Cup at the weekend.
Meanwhile, Rothwell Corinthians are back in UCL Premier Division action this evening.
They take on Oadby Town at Sergeants Lawn and Corinthians go into it on the back of a fine 5-0 home success over Boston Town on Saturday.
Division One side Raunds Town face a good test as they entertain Premier Division outfit Wisbech Town in the UCL Knockout Cup at Kiln Park.