The phrase "a concession for a" is grammatically correct and can be used in written English.
It can be used when discussing an agreement or compromise made in a negotiation or discussion, typically to benefit one party.
Example: "The company made a concession for a lower price in order to secure the contract."
Alternatives: "an allowance for a" or "a compromise for a".
(An epilogue mentions that two characters are "seeing the same doctor for treatment of post-traumatic stress," but that is too small a concession for a book with such a high body count).
While insisting that the nation had come a long way economically, he acknowledged that there were still significant problems and poverty, a concession for a leader who has been in power for nearly 30 years.
In 2002, for example, Mayor James and a handful of legislators from the Newark area held up the state budget to get a concession for a sports arena downtown.
The reason, known even to the youngest schoolchildren, concerned the most awkward aspect of the glittering metropolis: In 1842, in the humiliating aftermath of the First Opium War, the city, with its strategically located port, had been leased to Great Britain, as a concession, for a hundred and fifty-six years.
In April it rescinded a concession for a $950m copper project near Arequipa.All this has thrown doubt over the future of extractive industries in Peru, the main motor of the country's rapid economic growth (averaging 7% a year for the past five years).
Russian authorities granted a concession for a semi-weekly service by Aeroflot from Murmansk Airport.
The government plans to grant the Chinese company a concession for an initial 50 years, with the possibility of doubling it.
These are welcomed suggestions, but if they come only as a concession for an increased financial threshold, then they're ultimately insufficient.
He did extract a concession for withdrawing his amendment: a prime speaking slot.
The most prominent deal is a concession for COSCO Pacific, a state-owned shipping and ports giant, to run a terminal at the port of Piraeus and perhaps to build another.
The Gateway Marina there is operated as a concession for the Park Service, along with an adjacent golf driving range and pro shop.
