Lewis Gibbens and Callum Chettle have returned to Mansfield Town and Alfreton Town respectively at the end of their loan spells, which both expired on Saturday.
Gibbens is sidelined with a shoulder injury sustained at Spennymoor Town on Tuesday, while Chettle made just one start and one substitute outing during his month with the Pilgrims.
Barnsley loanee Tai-Reece Chisholm had already returned to Oakwell after two brief substitute appearances for United.
Goalkeeper Sebastian Malkowski, meanwhile, has linked up with Evo-Stik Division One East side Belper Town on a dual registration basis.
Updated 09:54 - 5 Feb 2019 by Craig Singleton