Hosmer is averaging 16 HR, 72 RBIs, and .279 AVG since he entered the league in 2011. He brings leadership and positivity to a team, something the Mets could use with Granderson seemingly a lock to be elsewhere next season.
Cain is a rare player in the current baseball landscape — he steals bases. He’s averaging 20 steals over his last four seasons, is batting .288 over that stretch, and finished third in the 2015 AL MVP voting. Yes, you knew the 2015 Royals World Series would be brought up at some point. His OBP is only .342 over that stretch, which may halt the Mets aspirations.
Moustakas is a similar player to Hosmer; he’s a fan favorite, an intense player, and is young — he turns 29 in September. He’s batting .227 this season with 19 HR and 46 RBI, and in the Royals’ 2015 World Series season, he produced a .284/22/82 slash line. Not bad. The Mets could use a third baseman.
Lastly, J.D. Martinez. From 2014-2016, he averaged 28 home runs, 82 RBIs and a .299 batting average. I’d say that’s pretty good, wouldn’t you?