Imps manager Keith Alexander has told Kevin George, Ben Sedgemore, Richard Liburd, Rory May, Allan Pearce, Scott Willis, Aaron Wilford, Darren Horrigan and Niall McNamara that their futures lie away from Sincil Bank.
But former Iron defender Jamie McCombe is one of six players offered new deals to stay.
They are: Simon Yeo, Matthew Bloomer, Simon Weaver, Jamie McCombe, Mark Bailey and Marcus Richardson.