Feyenoord will part ways with six players in the summer in order to cut costs and make it possible to acquire new signings.
The cash-strapped Eredivisie club will not offer new deals to Luigi Bruins, Tim de Cler and Rob van Dijk.
Additionally, the loan stints of Marcel Meeuwis, Soren Larsen and Krisztian Simon will not be extended.
Defender Bruins arrived at De Kuip from Excelsior in the summer of 2007 but has failed to make a significant impact for the club.
De Cler, a 32-year-old left-back, has slipped down the pecking order at Feyenoord since the winter break, while reserve goalkeeper Van Dijk will end his career at the age of 41.
Out of the three loanees only Meeuwis has managed to establish himself as a regular first-team player.
However, the potential return of Karim El Ahmadi, who has spent the season on loan at Qatar side Al Ahli, means Meeuwis is surplus to requirements in midfield.
Feyenoord are thought to be seeking a left-back, central defender and attacker in the summer transfer window, while also hoping to retain the services of starlet Ryo Miyaichi, on loan from Arsenal.