Delap has a hamstring problem while Lyness will undergo a late fitness test on a foot issue and should he not pass, 50-year-old Kevin Poole could be registered to provide cover on the bench for first choice goalkeeper Jordan Pickford.
Adam McGurk has recovered from the bout of tonsillitis which restricted him to a substitute role against Scunthorpe. The striker played in a reserve-team game against Kidderminster on Tuesday and looked sharp.
Meanwhile, Billy Kee also showed no ill effects from his first start in seven weeks against the Iron and looks set to retain his place up front.
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