"will not be retained" is a correct and usable phrase in written English.
It is often used to indicate that something will not be kept or kept on record. Example: The company has decided to downsize, so many employees will not be retained.
The Browns put out a short statement announcing that Grantham "will not be retained for the 2008 season".
Morten Gamst Pedersen, Gaël Givet and Mauro Formica will not be retained for reasons of finance rather than ability.
Two more high-ranking Jets officials will not be retained as John Idzik continues his purge of the previous regime.
Announced Pat Ruel, offensive line coach; Jim Zorn, quarterbacks coach; and Rob Graf, assistant strength and conditioning coach, will not be retained.
And if teachers are not successful, they will not be retained; they will either move to a different district that is not as difficult or leave teaching altogether".
Right guard Ron Stone will not be retained and there will be more cost-saving moves to come, including the release of the veteran left guard Glenn Parker.
Ugueth Urbina, a superb midseason addition to the bullpen, will most likely not be retained.
Your passport already has a photograph, so this copy will not be returned to you; it will be retained for the consulate's records.
Fortunately, fractured screw components will generally be loose because the preload has not been retained.
Identifying good leaders for virtual teams will not be easy; retaining their interest and goodwill may be even harder.
The working group also faces resistance from consumer advocates who contend that the latest proposal does little to assure Web users that their browsing history will not be collected and retained for indefinite periods of time.
