I'm not sure how reliable this is. It's from a tabloid, for starters, with no direct quote saying Snyder will actually consider Routh. He's more along the lines admitting there's some fan interest in seeing him reprise the role.
Also, that article has some inaccurate information to boot: It says Snyder will start work on the film after he completes his publicity tour for Legend of the Guardians
, but in actuality won't commence work on the film until he finishes post-production on Sucker Punch
, his next film.