Former Linfield and Crusaders striker Mark Dickson is among a number of players released by Donegal Celtic.
Aiden McVeigh and Andy Cleary have also left the club while free agent Liam Watson is now available to other clubs.
Stephen Brennan has returned to Cliftonville after a loan spell at Donegal Celtic.
Former Glentoran and Newry player Kevin Keegan has joined Donegal Celtic while Ryan Henderson and Paul McVeigh are among players to agree new DC deals.
Declan O'Hara, Liam Bradley, Thomas Lambe, Stephen McAlorum and Darren McNamee have also agreed new deals with Paddy Kelly's side.
Carrick Rangers have signed Ballinamallard United player Grant Hutchinson.