Photo credit: Keith Allison
I’d argue that one of the reasons the Yankees extended Gardner with a four-year, $52 million deal in 2014 which takes him through the 2018 season (there is team option for 2019) was in part to use as a trade asset. The Yanks know full well they have the potential for duplicate production from Jacoby Ellsbury, who the club invested $153 million in during the same offseason. They might rather ship Ellsbury, but his contract is not perceived as one which will be moved easily.
Gardner had an interesting 2015 season, in which he was on the top of his game in the first half, leading to his first All-Star selection. However, Gardner suffered a severe let down in the second half of the season which might have adversely affected his value. Gardner played a bulk of the second half with a nagging left wrist injury, but he neglected to blame his performance on the ailment.
The Yankees surely see Gardner as a player who can outperform his contract value based on the lengthy streaks of positive performance he’s provided during his tenure in the Bronx. However, the fact that Gardner is still in New York might mean that potential trade partners did not value Gardner as high as the Yankees. Those clubs certainly based their valuation on the significant slumps he has also suffered from.