You can't say Jon Gruden's going to be the next University of Tennessee head coach until he says it.
Even then there needs to be a news conference, a meet-and-greet with boosters, a get-acquainted session with players.
There must be something more concrete than a potential tweet into cyberspace that all this might really happen for it to be believable.
But with each day that comes and goes without a Gruden statement of denial, the improbable becomes more and more possible, if not downright likely.