Westley signed defenders Aaron Brown and Nicky Hunt on short-term deals in February, but that has not stopped them being shown the exit door alongside 20-year-old midfielder George Miller, who was handed his league debut by the former Stevenage boss.
Irish defender Daniel Devine, 19, came through the ranks to make 16 starts for North End this term, but must look for a new club along with veteran midfielder Ian Ashbee, David Gray, Michael McLellan, Scott Leather, Seanan Clucas, Jamie Douglas, Alex Billington and goalkeepers Andreas Arestidou, Iain Turner and Dominic Comrie.
Bailey Wright, another league debutant under Westley, is among the players with with a year left on their contracts who have been made available for transfer. Barry Nicholson, Brian McLean, Juvhel Tsoumou, Keammar Daley, Conor McLaughlin and Darel Russell are also surplus to requirements.
North End Player of the Year Thorsten Stuckmann is among the players under contract who Westley hopes to retain, as are Chris Robertson, Craig Morgan, Andy Procter, Chris Holroyd, Graham Cummins, Will Hayhurst, Adam Barton, Paul Coutts and Iain Hume, although speculation persists around the future of the latter two.
Paul Parry and Luke Clark are currently in discussions with the club over their futures, while winger Danny Mayor and striker Jamie Proctor have handed in transfer requests.
