Zaha, a target for Manchester United and Arsenal, went off at half-time with an ankle knock against Stoke in midweek but was back in full training on Thursday morning.
Boss Ian Holloway can add new loan signing Jacob Butterfield to his squad and welcome back Manchester City loanee Alex Nimely, who was ineligible against the Potters.
Julian Speroni, Dean Moxey, Yannick Bolasie, Andre Moritz and Glenn Murray should return to the starting line-up after Holloway rotated his squad for the 4-1 FA Cup defeat.
But Kagisho Dikgacoi is on African Nations Cup duty while Danny Gabbidon (hamstring), Paddy McCarthy, Joel Ward (both groin) and Owen Garvan (knee) are on the sick list.
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