The New York Mets had an underwhelming deadline to most of the fanbase as the moves made weren't for big names. This meant the Mets did not trade any of the highly touted prospects in their farm system, something they did do last year in a move that didn't help them make the playoffs.
Francisco Alvarez and Brett Baty are the cream of the crop in the Mets farm system. Both are ranked in mlb.com's top 100 prospect list with Baty number 18 and Alvarez the top ranked prospect.
Neither of those guys should or will get traded for anyone not in the Soto or Ohtani realm of player. They are far too valuable to be traded for even a high level player, it has to be a star or superstar.
While Alvarez and Baty are for the most part off limits, there are prospects I believe the Mets could and should trade to improve the roster in the offseason.
1) NY Mets prospect that could be traded: Ronny Mauricio
Ronny Mauricio is a guy I feel the Mets should have looked to trade once they acquired Francisco Lindor. Like Lindor, he is a shortstop who despite being 6'3, has only played shortstop. The Mets have not given him a chance to play any other position which tells me he has absolutely no future in Queens.
With Lindor signed on for ten years, it makes very little sense that the Mets have even kept him this long. They had a chance to get an impact player for him at the deadline while being a team 30 games over .500 and didn't do it.
To further complicate things, Mauricio's stock isn't as high as it once was. He's shown an inability to get on base at a good clip, walking just 17 times in 395 plate appearances. His .286 OBP is a big reason why he's going to spend the whole season in AA Binghamton while fellow prospects Baty and Alvarez have already moved onto AAA Syracuse.
Mauricio does have 21 home runs and is clearly immensely talented. As a blue chip prospect who plays shortstop he still does have a lot of value on the trade market.
With seemingly no future in Queens, the Mets should look to move on in search of talent that can help the Mets win next season and in the future.