He’s baaaaaaack.

And lo and behold, he’s baaaaack from Rexile as Woody Johnson’s worst nightmare.

He is Buffalo Rex, no longer as big as a buffalo, about to plow through the snow and find himself a new tattoo parlor and pick up where Doug Marrone left off before Marrone left off with his $4 million bounty hoping to replace Rex as HC of the NYJ.

And lo and behold: Rex will need a veteran quarterback, and Mark Sanchez is a free agent! Is it likely? No. Is it impossible? Have you seen the free-agent quarterback crop?

And what if … what if Darrelle Revis decides to put his money where his mouth is and leave Belichick for a reunion with his beloved Rex? The Bills’ new owner, Terry Pegula, does not harbor Johnson’s distaste for annual renegotiations, as far as we know. The Bills are projected as of this moment to have at least $16 million in cap room, and there is no John Idzik in the building who is interested in keeping it in his pockets. Just look at the way they traded up with the Browns to land wide receiver Sammy Watkins last year. Rex may not have a No. 1 pick, but he has his first legitimate, young No. 1 receiver.

You better believe Rex will be looking to raid the Jets for a few of his favorite disciples.

If you subscribe to the theory a head coach will be better the second time around (see Bill Belichick), then the pressure on Johnson to find a can’t-miss replacement for Rex has been ratcheted up immeasurably.

The key for Rex, as always, will be an offensive coordinator (Greg Roman?) who knows what the hell he’s doing, and help Rex at least with the perception that he is head coach of the entire team, not just the defense.

The tortured history of the Jets virtually guarantees that Rex will turn into Vince Lombardi, and every Play Like A Bill exclamation from him is certain to puncture the eardrums of long-suffering Jets fans.

Rex had to go out with Idzik, four consecutive years out of the playoffs meant it was time, but remember that he was at his best when he blew into our town six years ago and changed the culture with the full force of his bravado and braggadocio. Rex II will be a dangerous foe as he starts anew again now.

The Falcons were a better fit for him, mostly because of Matt Ryan versus EJ Manuel, but the Bills made him an offer he couldn’t refuse (five years, $27.5 million), and he inherits a formidable defense that will keep him in every game.

The Bills must let Rex be Rex.

Even if it means that he shows up talking about shaking hands with the president at his introductory press conference.

Turn him loose, and let him blow into One Bills Drive and send out storm warnings to the rest of the AFC East.

And oh — he won’t be coming there to kiss Belichick’s rings.

Blunt force trauma, even if he has decided that guarantees are Broadway Joe’s domain.

The death of Coachspeak.

Rex could have escaped Belichick, and chose to keep trying to topple him instead. How’s that for moxie?

Bills players will want to run through a snow drift for him. They will rally around his you-take-a-swipe-at-one-of-ours, we’ll-take-a-swipe-at-two-of-yours defiance and bravado.

There will probably be a firestorm or two along the way — try not to flip anyone the bird, Rex — but the reward will be greater than the risk. The Bills will be a team no one will want to play. Buffalo Bullies.

By no means is he the perfect coach on Gameday. But Rex had no chance the past two years with Geno Smith. No chance after Idzik bombed the 2014 draft. He is the perfect coach to get a franchise that hasn’t seen the playoffs in 15 years to believe.

Good luck, Woody. Time to find a head coach who can get a franchise that hasn’t won a Super Bowl in 46 years to believe again.

And just in case you were wondering, Monday marks the 46th anniversary of Super Bowl III.