A recent story suggested that the New York Yankees should make an effort to trade for Ryan McMahon, citing his defensive versatility and offensive firepower. These are exactly the same reasons the Colorado Rockies would not want to part with the 25-year-old who just came off a very strong first full season, hitting 24 home runs and driving in 83 runs.
However, the Yankees have plenty of young talent (especially pitching talent) to offer and the Rockies have a lot of young infielders who could slot in at second base (Brendan Rodgers and Garrett Hampson are the first that come to mind, with several more waiting in the wings).