The Mets’ volatile offseason — in the wake of a historic collapse months ago — continued Monday when they traded veteran second baseman Jeff McNeil to the Athletics.

New York will receive rookie-ball pitcher Yordan Rodriguez in the deal, which was reported by ESPN. Rodriguez is a 17-year-old right-hander from Cuba who made his pro debut in the A’s system earlier this year.

The Mets also sent $5.75 million to the Athletics to help cover McNeil’s $15.75 million salary, per ESPN. They’ll be on the hook for McNeil’s $2 million buyout next year as well if the A’s decline his club option for the 2027 season.

McNeil is the latest member of the Mets’ core to depart this offseason, via trade or free agency, and he was the longest tenured Met after outfielder Brandon Nimmo was traded earlier this offseason.

Nimmo was dealt to the Rangers for veteran second baseman Marcus Semien. Then, during the Winter Meetings earlier this month, both closer Edwin Díaz (Dodgers) and Mets all-time home run leader Pete Alonso (Orioles) signed with new teams on the open market.

Factoring in the McNeil trade, Mets president of baseball operations David Stearns has been ignoring sentimentality this offseason. He’s been comfortable shaking up a roster that flopped in 2025, focusing on addressing other needs and bringing in new blood while maintaining a clear emphasis on run prevention.

McNeil, 33, had a bit of a resurgent year offensively this past season, but he’s nowhere near the hit machine he was when he won a batting title with the Mets in 2022. The lefty slashed .243/.335/.411 in 2025 with 12 home runs — while appearing at six different positions on defense — over 122 games played this year.

A McNeil trade felt inevitable after Semien was acquired from Texas. The Mets could’ve used McNeil in a utility role, but he’s under contract for one more season, so this gives the Mets a chance to recoup some value before he would’ve left on the open market next winter. It also paves the way for younger pieces — or new faces acquired from other organizations — to carve out playing time next year.

The trade to Oakland marks an abrupt end to McNeil’s 13-year run in the Mets’ organization. He was drafted by New York in the 13th round in 2013, and he made his big-league debut with the club in 2018. Over his eight years in a Mets uniform, McNeil appeared in 923 regular-season games and was a .284 hitter with a .779 OPS.