This is, of course, the same Torygraph article that places Roquefort in Lozère, the Cévennes and southern Auvergne instead of Aveyron and the Midi Pyrénées, all in the first paragraph. After which it's difficult to take the guy seriously.
Yes, the sheep farmers are worried. But as we say around here, there are two people you won't meet in this life -- God and a satisfied farmer! These are the same farmers who fought tooth and nail against the reintroduction of vultures to the Gorges de la Jonte because they would kill the lambs and now grudgingly admit they were wrong; the same farmers who say that vultures in the Pyrenees are attacking fully grown cattle, when vultures are not equipped to attack anything; the same farmers who are fighting to get rid of the few bears that still survive in the Pyrenees.
And yes, a wolf -- one, not a pack -- has been spotted in Lozère and tracks found. But last I heard only two cases of attacks on livestock might repeat might be attributable to a wolf. There's still no certainty so far as I know. Marauding dogs, on the other hand, have been shown to be responsible for almost all the attacks on livestock and cause far more damage. It's no coincidence that the prefecture has issued a reminder of the laws on letting dogs roam.
And the collection area for milk used to make Roquefort is so large that one wolf ain't gonna make a lot of difference. Even if he/she stays here instead of just passing through.