Elliott Parish, Genseric Kusunga and Martin Woods will all move on along with Faissal El Bakhtaoui and James Vincent who have spent this season out on loan.
Loan signings Seny Dieng, Ryan McGowan, James Horsfield, John O’Sullivan, Scott Wright, Ethan Robson, Andy Dales and Andreas Hadenius have all returned to their parent clubs.
As confirmed previously Darren O’Dea has also left the club after taking the decision to retire from full time football.