Boston United manager Dennis Greene has offered terms of re-engagement to Joe Burgess, Kaine Felix, Zak Mills, Dayle Southwell and Fabian Spiess.
The one-year option on Jay Rollins’ contract has been exercised, meaning he is automatically contracted for next season alongside Lewis Hilliard and Cameron Johnson.
Lincoln City loanee Nat Brown has been offered a permanent contract by the Pilgrims.
Discussions are continuing with Scott Garner, Mark Jones, Richard Jones, Malachi Lavelle-Moore, Liam Marrs and Grant Roberts.
Ryan Robbins and John Sands have been released without offer, while Carl Piergianni is taking a break from football to embark on a year of travelling.
Loan player Dylan McEvoy has returned to Sunderland.