There is a pressure from media and public not to allow any Russian or Belarussian drivers to the rally. Urmo Aava (rally director) has said it publicly that they are not allowed to participate and their wish has been forwarded to FIA and promotor already earlier. And they don't even want to allow this scheme that you could participate under some other flag (be it neutral or some "my grandmother has X nationality). So probably Gryazin will not participate.