Dave Gettleman got off the canvas following the Landon Collins follies and made a good deal unloading Olivier Vernon for Kevin Zeitler, a quality bookend guard for Will Hernandez on an offensive line he vowed to upgrade when he arrived and a godsend for Saquon Barkley, Eli Manning and the quarterback’s unidentified successor.

Now, if the smoke in Arizona is a fire and Kliff Kingsbury absolutely has to have Kyler Murray with the first overall pick, Gettleman must get on the phone and convince Cardinals GM Steve Keim to trade Josh Rosen for his second-rounder, the 37th pick of the NFL draft.

And then, with his sixth pick, draft the highest-rated pass rusher on his board.

Of all the holes on his roster, Gettleman’s two biggest happen to be the two most critical: franchise quarterback and pass rusher.

Eli Manning, in case you haven’t heard, is 38 and counting and putting on the 18th hole of his HOF career, and even though Lawrence Taylor at 60 could show up tomorrow at the Quest Diagnostics Center as the best pass rusher on James Bettcher’s wasteland defense, he’s content playing golf down in Florida.

So my Big Blueprint would allow Gettleman to kill two birds with one stone.

It would eliminate the need for him to surrender assets to move up from No. 6 for Dwayne Haskins in the event that he falls in love with him and fears the Jaguars, Broncos, Bengals or Dolphins jumping him, or Jon Gruden grabbing him at 4.

Rosen is also considered by most as a slightly better prospect coming out than Haskins is now.

Gettleman would be playing a treacherous game waiting for Haskins to fall to him at 6, if in fact he would value him over the BPRA — Best Pass Rusher Available. Or BPA — Best Player Available.

Gettleman ideally should target a pass rusher in free agency and add another one in the draft (Why was Romeo Okwara cut, by the way?) Remember when then-GM Ernie Accorsi traded down and drafted Mathias Kiwanuka at the end of the first round in 2006 at a time when he already had Michael Strahan, Osi Umenyiora and Justin Tuck?

“You never have enough pass rushers,” Accorsi said afterwards. “And like home run hitters and pitchers, you just never have enough of them. … When you put pressure on the passer, everybody else’s job is easier. ..quarterback, pass rusher, left tackle and corner, those to me are the foundations of your team.”

Rosen, following a nightmare rookie season behind an injury-plagued offensive line and the mid-season firing of OC Mike McCoy, would be able to heal psychologically behind Manning, at least at the start of the 2019 season. It would fulfill Gettleman’s stated desire to implement the Kansas City model, understanding, of course, that there is only one Patrick Mahomes.

Oh, and never forget what Giants co-owner Steve Tisch said about Rosen following a pre-draft dinner with him in Los Angeles:

“His table manners: Unbelievable. He was brought up very well. He’s a very charismatic young man.”

Table manners would be immensely important in the event that Tisch and John Mara decide on a marketing ploy that would feature Chosen Rosen devouring a corned beef and pastrami on rye at Katz’s Deli.

My plan would allow Gettleman to silence critics — not that he listens to them — who never stop reminding him that he made a mistake passing on Sam Darnold and Josh Allen… and Rosen a year ago. It would give him his generational running back, his franchise quarterback and a pass rusher to replace Vernon and help young Lorenzo Carter.

Big Blue Heaven.