If it is true that everything that goes around comes around, Eli Manning this season will find himself smack in the middle of a tenuous situation that will make his time as the Giants’ starting quarterback borrowed time, with the presence of Daniel Jones looming nearby.

No one on the planet knows this better than Kurt Warner. He was signed by the Giants in 2004 to serve as the sacrificial starting quarterback until it was deemed time for Manning as a rookie to move into the job. Warner’s starting gig lasted nine games and he exited with a winning (5-4) record, much to the chagrin of veterans such as Michael Strahan and Tiki Barber, who fully understood handing the controls to the novice Manning meant the end of any playoff contention.

This is the dance the Giants will engage in this season with Manning now that Jones, taken with the No. 6 pick in the NFL draft, is waiting in the wings.

“It’s always hard,’’ Warner, currently an NFL Network analyst, said Thursday as he paid a visit to Giants training camp. “When you’re the veteran guy and you know there’s a guy behind you that’s eventually going to play it was always one of those things you had to fight not playing worrying about making a mistake or getting tight and play differently than you did before.

“Most guys are not going to ever tell you that but it’s the way it is. You go how long is my leash? If I have a bad game is that it? If I have a bad half is that it? That becomes the hard dynamic to it. Go play. You got to play your game and let it play out and if you don’t you’re not going to hold the job for very long anyways.’’

Warner 15 years ago had already won a Super Bowl with the Rams and needed to re-invigorate his value around the league. He saw the Giants as a short-term opportunity and he played well enough to get a shot in Arizona, where he led the Cardinals to their first Super Bowl to inflate what turned into a Hall of Fame resume. So, it all worked out for Warner in his brief stay in Giants blue.

He recalled Tom Coughlin being completely up-front with him, not trying to blow any smoke about Manning being ready or giving the team the best chance to win.

“I don’t think there’s any question at the time I was the better quarterback,’’ Warner said. “It wasn’t like every day I was going ‘I’m better than him.’ We know that. I give Tom so much credit, he looked me in the eye and told me this is why, it’s not fair to you, you got to deal with it.’’

Warner, of course, was a newcomer with no history with the Giants. Manning delivered two Lombardi Trophies to the franchise and is an adored player and person in the building.

“You know the time is going to come where they want to go to the young guy,’’ Warner said. “That becomes the hard thing, pushing that completely out of your mind. If you have a bad half and everybody is like ‘Put in the young guy.’ You start to think about those things and it’s tough to tune that out completely.’’

The only way to stave off what seems inevitable is to play well as the Giants win.

“Normally when you’re in a situation like this and you make the move from the veteran to the young guy is when you kind of feel the season is out of hand,’’ Warner said.

There is no doubt Manning benefited greatly from starting the final seven games as a rookie, even as he lost his first six starts. This Giants brain-trust may have to make the determination when to bail on this season in order to start the clock on Jones’ on-field development

Based on Jones’ work at Duke, Warner is not sold on this pick. He sees Jones as smart but wonders if he can make the plays he needs to make when the environment on the field is breaking down around him.

“There’s some guys that have to play in more of a perfect world, and they can be really good quarterbacks,’’ Warner said. “They have trouble in taking and elevating a team when things aren’t great, and that to me is the biggest question I have with Daniel. Can he do that? Can he be that guy that can carry a team with his right arm no matter the situation?’’