How to limit entity and/or field translation permissions to selected languages only? Is it possible to give some user/role the permission to translate only one language?

I've seen these permissions:


Translate any entity.
Translate field content for any fieldable entity.


But these permissions allow users to translate all languages.

I have one user that has to translate to English and another user who translates to German ...
Interesting (valid!) question. But to my knowledge, and assuming this is for D7 (not D8), this is NOT possible ... yet.

Refer to (active) issue # 1829630 for more details, which also references (fixed) issue # 1807776 related to D8 (and contains a lot of interesting details ...).