Entering Thursday, Duda is slashing .246/.347/.532 with 17 home runs and 37 RBIs in 75 games this year. The 31-year-old is slated to reach free agency at the end of the season.
The Yankees reportedly asked the Mets about Duda earlier this month.
Heyman notes that the Mets have top prospect Dominic Smith "waiting in the wings." The 22-year-old Smith, ranked No. 23 in Keith Law's midseason prospects list, is slashing .337/.390/.524 with 15 home runs and 68 RBIs in 102 games with Triple-A Las Vegas this season.
-- Alex Tekip