The 31-year-old was carried off in last week's season opener and, while his foot injury is not as serious as first thought, he will miss the Goodison Park clash.
On the mend: Dyer could be back sooner than expected for Warnock
Warnock still awaiting international clearance for recent signing Bruno Perone, while both striker Rob Hulse (knee) and Jamie Mackie (broken leg) remain out.
Provisional squad: Kenny, Murphy, Orr, Derry, Hall, Gabbidon, Taarabt, Campbell, Bothroyd, Faurlin, Gorkss, Buzsaky, Connolly, Smith, Helguson, Moen, Agyemang, Shittu, Ephraim, Perone.
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