There are particular players each team excels at developing (Mets=Power Pitching) and for Texas its superstar shortstops and Sardinas is next one up. Sardinas has a huge roadblock ahead in Andrus and Profar so he might be a player Texas would trade at the right price. He finished last season at Double-AA and he's farther from the Majors than those who have been connected to the Mets (Nick Franklin, Chris Owings) but he has one thing that the others don't. All Star potential on both sides of the ball and can bat lead-off! He'd likely start next season at Double AA but will likely get a mid-season promotion to AAA and a September call-up, and since next season is practically lost why not grab the switch-hitting, defensive wizard and shortstop of the future.
The question your all asking is whats the trade. If you look at Texas' system they have a huge weakness at developing starting pitching and the Mets have excess SP in my opinion. Jonathan Niese is the guy to deal. His value is high under the team friendly contract and after taking on the Fielder contract Texas probably doesn't want to throw huge money at pitching. The Mets made an interesting announcement saying that Wheeler would start on Opening Day so hint, hint Niese is the more likely to be traded. If you are saying wait we need a lefty in our rotation look at the Cardinals NL winning rotation last year. Wainwright, Miller, Wacha, Kelly and Lynn so no lefty there. Also the Mets added Steve Matz to the 40- man and he's not as far away was everyone thinks he is.
The official trade would be Jonathan Niese for Luis Sardinas, Nick Williams and Lewis Brinson. Williams is a power hitting outfielder in the lower minors and Brinson is a speedy center fielder also in the lower minors who would add some outfield depth to the system since that is our weakest link right now. Let me know how you guys think about this trade and if you want to see scouting reports in Sardinas, Williams and Brinson here is a linkhttp://texas.rangers.mlb.com/mlb/news/prospects/index.jsp?c_id=tex