Whing was handed a straight red card in the 1-0 loss to Chesterfield and the U's decided against appealing the decision, ruling the midfielder out for the next three games.
Former Reading striker Kitson picked up his fifth yellow card of the season in that defeat and with captain Jake Wright, James Constable, Jon Meades and Max Crocombe all missing it leaves Chris Wilder rather short of bodies.
Alfie Potter could start behind Deane Smalley as the U's look to get back to winning ways having tasted defeat for the first time in League Two this season.
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- James Constable