Five members of Boston's squad have signed new contracts for next season, but five are leaving York Street. Mark Greaves, Chris Holland, David Galbraith, Simon Rusk and Paul Ellender have all agreed new deals.
But defenders Alan White and Austin McCann, and midfielder Danny Thomas have failed to agree terms and are free to join new clubs over the summer.
Striker Lawrie Dudfield, 26, and midfielder Steve Melton, 27, have both been released.