Forward Luciano Becchio and goalkeeper Adam Collin are among 11 players set to leave Championship side Rotherham.
Becchio, 32, joined the Millers on loan in 2014 before making two appearances this term after signing until May.
Collin was involved in the Millers' promotion to the Championship, making 81 appearances in three years.
The club have confirmed that they are in talks with leading goalscorer Matt Derbyshire, whose contract expires this summer.
Defenders Kirk Broadfoot, Richard Wood and Stephen Kelly, and striker Leon Best are also set to be offered new deals.
Frazer Richardson, Lewis Buxton, Danny Collins, Lloyd Doyley, Paddy Kenny, Alex Cairns, Paul Green, Emmanuel Ledesma and Jerome Thomas are all being released.