BECK' IN TRAINING

OBJ to attend Jints'offseason program

Pat Shurmur two weeks ago would not have revealed “it is my understanding’’ Odell Beckham Jr. will be in attendance when the Giants open up their offseason workout program unless he was assured by the superstar receiver that he indeed will be in the building on Monday, when the program kicks off.

Shurmur has been at this long enough to realize setting up such an expectation and then having it not realized is dangerous and unnecessary. He met with Beckham several weeks ago in Los Angeles and, based on that conversation, the new Giants coach felt confident enough to announce Beckham will show up. That will happen, The Post confirmed.

All offseason workout programs are not created equal, and the one the Giants embark on holds greater significance than most of these spring reunions.

There is a new head coach in town, which means there is a mostly brandnew coaching staff, which means there is a new offense and defense to learn, new ways of teaching, different personalities to gauge. Officially, no attendance is taken and everything is voluntary. Realistically, everyone knows who is in the building and who stays away.

“I think it’s important,’’ Shurmur said. “When you build a chemistry, you can’t develop those relationships unless you’re working together, that’s why it’s super important you have a high attendance rate at the offseason. I know there’s a resistance sometimes but players need to be there, especially when you’re adding new players, there’s new schemes, it’s really the best thing for them.’’

Every coach wants every player to show up, not necessarily for every single session, but often enough to get acclimated to all the newness. Beckham last year stayed away, preferring to do his own thing in Southern California. That Beckham will be on the scene for Day 1 sends up a bright flare that this is not business as usual for him in his quest to come back from a fractured left ankle and secure a long-term contract.

Beckham no doubt heard the overheated — and overblown — rumors about the Giants entertaining offers to trade him away — they did, but nothing remotely serious ever materialized. The organization is moving forward with Beckham firmly in the plans.

All players upon arrival undergo medical workups and the Giants will be interested in the progress Beckham has made since his surgery Oct. 9 — although Beckham regularly sends the team video updates. His presence in the building this week does not assure he will remain for the entire program, or if he will be on hand for the mandatory mini-camp (June 12-14), or if he will report on time for training camp this summer, given that he does not want to play the 2018 season on his contract of $8.45 million.

It is a positive sign, though, that Beckham will be present as the program commences. Defensive end Olivier Vernon stayed in Miami last spring and did not attend much of the offseason program; Vernon is also expected on site Monday.

The first two weeks of the nineweek program, Phase 1, consists of activity limited to strength and conditioning and physical rehabilitation. Players are not permitted to work on the field until Phase 2. Coaches and players can start talking football concepts, ending the awkward exchanges that took place the past few weeks whenever Shurmur mingled with Eli Manning and Davis Webb in the team cafeteria.

“It’s really exciting for us, we’re on the verge of getting them back so we can start training,’’ Shurmur said. “This is the time of year we as coaches don’t get to do what we like to do, and so I’m excited to get to know the players. I know some of them, I’ve studied them, some of them I’ve worked with in the past but this will be the time when I get to really know them and that’s what I’m really excited about.’’

Shurmur has yet to alert Beckham as to the how the passing game will be centered around the mercurial receiver, as the get-together on the West Coast was get-to-know-you rather than get-the-ball-to-you.

“We couldn’t talk about that but I’m looking forward to seeing him when we get going,’’ Shurmur said.

Teams with new head coaches are allowed an extra voluntary veteran minicamp and Shurmur will hold his April 24-26. Between now and then, he will, finally, get to do what he was hired to do as he meets several players for the first time and starts indoctrinating the entire roster to his football philosophy.