The New York Mets are focusing on upgrading their offense and the third base position and have engaged in preliminary talks with the Minnesota Twins for third baseman Josh Donaldson, according to league sources. With the calendar flipping to July, the trade rumors are starting as we approach the deadline at the end of the month. The Mets don't want to trade the few top prospects they have, and they want to remain under the luxury-tax threshold. So if they are able to land Donaldson, they'd have ...