With defender Tom Cruise serving a one-match suspension for his dismissal against York last weekend 32-year-old Nicholson, who has been with the Gulls since 2007, is expected to get the nod.
Manager Alan Knill has no fresh injury worries ahead of the trip but he remains without Craig Easton who is sidelined with a calf injury.
A number of Knill's squad got some valuable game time under their belt in the Devon Bowl semi-final win over Bideford in midweek. Nathan Craig and Ashley Yeoman, regulars on the bench in recent weeks, scored the goals while Aaron Downes and Ian Morris played for 90 minutes.
Downes was an unused substitute last weekend having returned from suspension while Morris is returning to match fitness after his Achilles tendon injury.
Eight points from their last four match has lifted United five points clear of the drop zone ahead of the Easter fixtures.
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- Craig Easton