NEW YORK — The New York Mets held their first winter event for fans in five years at Citi Field on Saturday, and there was one notable absence. Pete Alonso wasn’t in attendance because, for the first time since the 2016 draft, he isn’t a member of the Mets’ organization.

The homegrown star first baseman remains a free agent and, though a reunion remains possible, he might have played his last game as a Met.

Owner Steve Cohen bluntly said as much Saturday after taking the stage for a fireside chat with fans to chants of “We want Pete!”

“Personally, this has been an exhausting conversation and negotiation,” Cohen explained. “I mean, [Juan Soto’s negotiation] was tough. This is worse. A lot of it is, we’ve made a significant offer. I don’t like the structures that are being presented back to us. I think it’s highly asymmetric against us and I feel strongly about it.”

Alonso, along with third baseman Alex Bregman, is one of the two best position players left on the free agent market. The first baseman, who is represented by Scott Boras, originally sought a long-term deal, but he is open to returning to the Mets on a three-year contract and the Mets have been open to such a deal, according to a source. The obstacle has been money.

“I will never say no,” Cohen said. “There’s always the possibility. But the reality is we’re moving forward and we continue to bring in players. As we continue to bring in players, the reality is it becomes harder to fit Pete into what is a very expensive group of players that we already have and that’s where we are.

“I’m being brutally honest. I don’t like the negotiations. I don’t like what’s being presented to us. Maybe that changes. I’ll always stay flexible. But if it stays this way, I think we’re going to have to get used to the fact that we may have to go forward with the existing players that we have.”

The Mets recently re-signed outfielder/designated hitter Jesse Winker to a one-year, $7.5 million contract and added left-handed reliever A.J. Minter on a two-year, $22 million deal. They’ve also signed Soto (15 years, $765 million), Sean Manaea (three years, $75 million), Clay Holmes (three years, $38 million), and Frankie Montas (two years, $34 million), among other moves, this winter.

Preparing for life without Alonso, the Mets recently instructed third basemen Mark Vientos and Brett Baty to work out at first base. Vientos and Baty both confirmed the organization’s request Saturday.

“We all love Pete, and we’ve said that many times,” Mets president of baseball operations David Stearns said. “And I think, as we’ve gone through this process, we’ve continued to express that. We also understand that this is a business and Pete, as a free agent, deserves the right and has the right and earned the privilege, really, to see what’s out there. We also feel really good about the young players who are coming through our system who have the ability to play at the major-league level.”

Vientos, 25, enjoyed a breakout season as one of the best hitters in the National League after solidifying himself as the Mets’ every-day third baseman in May and helping fuel the team’s run to the NL Championship Series. Baty, a former top prospect, was the club’s opening day third baseman last season. He struggled after a hot start before he was demoted to Triple-A and didn’t return to the majors.

Mets manager Carlos Mendoza also named veterans Jared Young and Joey Meneses, both of whom signed this winter, as other options at first base if Alonso doesn’t return.

“Pete’s been here since I’ve been here,” said Mets shortstop Francisco Lindor, who has starred for the franchise since 2021. “He was here before me. So, yeah, it would be different if he goes somewhere else. Yeah, it would be different. But I think he should take his time. I think he should make the best decision for himself and not feel that he’s rushed.”

Alonso, 30, became a fan favorite while becoming a franchise cornerstone over his six seasons in Queens. He’s hit 226 home runs since making his major-league debut — the second-highest total in baseball behind only Aaron Judge. His 53 home runs in 2019 set a rookie record. He’s been a reliable everyday presence; he’s never missed more than nine games in a season and played in all 178 games, postseason included, in 2024. He’s made four All-Star teams and won the Home Run Derby twice.

But he rates as a poor defender and baserunner whose offensive production has declined over the last three seasons, creating a free-agent market that hasn’t been as fruitful as projected when he declined a seven-year, $158 million contract extension in 2023.

“Listen, he’s a special player,” Hall of Famer and former Mets catcher Mike Piazza said Saturday. “Guys that can hit 40 home runs are not walking on the street. So when he’s really in his game, he’s a special player. I hope, from a personal standpoint, I hope they work something out.”

Outfielder Brandon Nimmo, the longest-tenured player on the roster after debuting in 2016, signed an eight-year, $162 million contract to remain with the Mets two offseasons ago. Like Alonso, Boras is his agent. Unlike Alonso, he reached a resolution in December, not with spring training around the corner.

“I would love to see Pete back with us, but I also understand that I don’t make those decisions,” Nimmo said. “And that’s between Pete and our front office and David [Stearns] and Steve [Cohen]. And from what I understand, there’s been a lot of talks between them. I’m still hopeful that we’ll sign him.”