Conner Robinson has returned to Boston United for a second loan spell while Nat Brown has also linked up with the Pilgrims.
The Lincoln City striker, 21, netted twice in four matches during a month-long stint with the Pilgrims last season.
He scored on his debut, a 2-0 victory over Gloucester City, and also during a 1-1 draw at Worcester City.
Brown, who has previously been a loan target for the Pilgrims this campaign, is a 34-year-old defender with previous experience with Huddersfield, Wrexham, Macclesfield and Halifax.
The Imps duo are expected to be available for Saturday’s home match against North Ferriby, and appear set to remain with the club until the end of the season.