Treacy feared he had damaged knee ligaments at Swansea last weekend and although scans have not confirmed this, the Irish winger will undergo a late fitness test. David Cotterill and Glen Little are on stand-by.
Kilgallon was forced out of the action against Ipswich in midweek after turning his ankle and will also have a late fitness test. On-loan Stoke defender Andrew Davies could therefore start alongside Chris Morgan.
Striker Jamie Ward remains sidelined with a hamstring strain, so recent loan signing Richard Cresswell will provide manager Kevin Blackwell with another option again after stepping off the bench for his first appearance on Tuesday night.
Defender Gary Naysmith is continuing his recovery from a cruciate ligament injury sustained in April.