Buckley's deflected strike sent the Toon tumbling out of the fourth round last season, but the boyhood Newcastle fan is struggling with a hamstring injury and is not expected to be fit for the third-round rematch.
Right-back Bruno is also likely to sit out with an Achilles injury while fellow Spaniard Vicente is still not fit after a thigh problem.
Jake Forster-Caskey and Romain Vincelot are back with the Seagulls following loan spells and are available, although boss Gus Poyet is expected to field his strongest side.
Winger Kazenga LuaLua will be hoping to line up against his former club.
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