Harvey marked his full debut for Argyle with a last-minute equaliser in the 1-1 draw with Torquay.
The result stretched the club's unbeaten run to four matches, following a third consecutive 1-1 draw, and the teenager is expected to be given another chance to impress.
Winger Paris Cowan-Hall was recalled to the starting line-up for the game after completing his recovery from a dead leg and should continue on the right-hand side.
On-loan midfielder Mark Molesley will be assessed ahead of kick-off after he was left out of the Boxing Day draw due to a hamstring problem.
Joe Lennox and Isaac Vassell's deals expire after the game, but Fletcher is looking into extending their stays in January.