Stuart Pearce has released 10 Manchester City players including loanees Kiki Musampa and Albert Riera and French defender David Sommeil.
Dutch midfielder Musampa returns to Atletico Madrid with winger Riera heading back to Espanyol, while Sommeil's contract has expired.
Goalkeeper Geert de Vlieger and Danish defender Mikkel Bischoff have also been released along with four reserve-team players Tuomas Haapala, Ian Bennett, Karl Bermingham, Paul Collins and Michael Ward.
The decision to allow Spaniard Riera to head home rather than attempting to tie him down to a long-term deal will surprise many City fans impressed by his performances on the left flank since arriving in January.
Musampa's spell in England has been inconsistent with moments of brilliance often only fleeting.
Sommeil cost City £3.4million when they signed him from Bordeaux in January 2003.
Pearce met his players at the club's Carrington training ground earlier this week to announce his decisions.