Dennis Greene has not given up hope of bringing keeper Joel Dixon back to the Jakemans Stadium.
The Sunderland under 21s stopper played the final game of his loan spell against Colwyn Bay on Sunday.
He was expected to link up with Conference Premier Alfreton Town, but on Monday night the Reds announced they had extended the loan stay of Sheffield United keeper George Willis.
Willis will remain with Alfreton until February 3, giving the Pilgrims further hope in bringing Dixon back to the club.
Greene has also confirmed that he will bolster his ranks with fellow Sunderland under 21s player Tom McNamee, who was due to join the club last week before suffering a minor training ground setback.
Speaking of the centre back, Greene added: “It’s a lad from Sunderland, Tom McNamee, who was going to come in before the two games but he rolled his ankle in training.
“He’ll be fit for the 17th (away at Harrogate).
“They cost us nothing and the pedigree’s excellent - when have we had a bad player come from Sunderland?
“I watch Sunderland games and know a lot of their under 21 players from watching games.”
McNamee will be the latest addition to United in a 10-day spell of comings and goings.
The Pilgrims have signed winger Nicky Walker and midfielder Grant Roberts, who both became free agents after leaving Rotherham United and Gainsborough Trinity respectively.
They have also brought in Alex Simmons (Lincoln City) and Greg Tempest (Notts County) on loan, Tempest returning after a previous spell.
Loan target Kyle Dixon will not return from Notts County for a third time after agreeing to link up with AFC Telford United, while central defender Stefan Galinski has finalised his move to Stalybridge.