Some teams as of now that could be in on Vladdy next offseason as a FA or possibly trade for him this offseason:
Astros
Dodgers
Yankees
Red Sox
Mets
Padres
Cardinals
Mariners
Angels
Nationals
Tigers
Astros need a 1B badly after running with Singleton + crap for most of the season. Vladdy would fit in fantastic with Yordan Alvarez and Kyle Tucker as a dynamic young offensive core for the next decade. As well if the Astros don't bring back Bregman, Vladdy could also get some reps at 3B if needed. The Astros are in win-now mode and also Texas has lower taxes, which could entice Vladdy.
Yankees have the money and need a 1B after Rizzo leaves via FA. If they re-sign Soto, they could open up the cheque book for Vladdy next offseason. Would lock up two of the best young bats in the game, to go along with Aaron Judge. That would be one of the scariest middle-of-the-orders in baseball.
Dodgers have the money, so can never count them out. Freeman is getting older and is under control only through 2027. As well, the Dodgers do like to move guys around the diamond rather than having some guys set at one position, so Vladdy might be someone they can offer playing time at 3B, since they have a club option on Muncy after 2025, at $10 million, which they likely pick up anyways which is pocket change for them. Dodgers would have to get creative by trading Freeman at some point, since Ohtani occupies the DH spot currently, but if he moves to a corner OF spot, they could make it work with all 3 guys.
Would never count out the Red Sox or Mets, since they have money and also are in need of a big bat.
Padres have shown a willingness to spend big and they could us another big bat at 1B. Pairing up Vladdy with Tatis and Merrill would be a solid young core.
Cardinals, Mariners and Angels are less likely but they have spent money before on big contracts. Mariners need a big bat badly and pairing Vladdy with J-Rod would actually solidly their middle-of-the-order for the next decade. Vladdy Sr played for the Angels, so maybe something is there.
As for the Nationals & Tigers, depends on which direction they plan on taking. The Nationals are rumoured to be in on Soto this upcoming offseason, so that shows they are willing to spend money. The Nats are getting better and on the rise, so signing a bat like Vladdy to big money could benefit them. As well, there is always the Expos connection which maybe might play some kind of role, but doubt it. The Tigers, could be positioned to spend big on someone and Vladdy would be the most logical given his age and their timeline.