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If Dover overcome Guiseley in their FA Trophy replay, they will face a trip to Nantwich or Stourbridge in the quarter-final.
And should Evo-Stik Northern Premier Division side Stourbridge go through it would set-up a repeat of the FA Cup first round tie at Crabble in November, which Chris Kinnear's side lost 2-1.
Cheshire-based Nantwich are also in the Evo-Stik Premier Division and sit eighth, a place below Stourbridge, from the West Midlands.
Dover stayed in the hat on Saturday thanks to a last-minute goal from sub Duane Ofori-Acheampong in the original tie at Crabble, which ended in a 2-2 draw.
They exited at the quarter-final stage last season, after losing a replay at lower-division Bath.
The last-eight ties will take place on Saturday, February 27, with winning clubs receiving £8,000 from the FA’s prize fund.
Should Dover progress their scheduled game against Lincoln City at Crabble will be rearranged.
The Guiseley match will now take place on February 16 after Tuesday's game was postponed due to a waterlogged pitch.
Other ties: FC Halifax/Chester v Gateshead; Grimsby Town v Woking; Sutton Utd/Bognor Regis Town v Torquay United/Macclesfield Town.