The New York Mets’ biggest need right now is pitchers, for both their starting rotation and their bullpen. While positions like third base and catcher could use offensive upgrades, given the struggles of guys like Mark Vientos and Francisco Alvarez this season, center field is clearly where the Mets’ depth is most deficient. Not only is Jose Siri still not close to returning after fracturing his leg earlier this season, but New York hasn’t received much offensive production from the other players who have played the position to this point.