What do you expect Arizona to say? This is obviously meant to save them either a player or at least some cash. If they don't come out and say this, the Bills could make an offer, what ever it is, it would be more than the tender, so 'Zona would either have to pay more or lose Wells.
If the Bills want him, which I hope they do, they will make an offer and force the Cards to put their money where their mouth is.