New York is looking for a "grand slam" in terms of major-league talent in a swap for the 26-year-old, a source told Mike Puma of the New York Post.
This aligns with a statement made by Mets chief operating officer Jeff Wilpon, who said a deal for Syndergaard would need to be "pretty lopsided."
A recent report claimed the Mets were seriously considering deals for Syndergaard with his trade market growing, but Puma writes their attention could turn to bolstering the bullpen or finding a catcher if proposals don't meet their standards. Puma mentions Andrew Miller, David Robertson, and Martin Maldonado as possibilities for New York.
Thor appeared in 25 games for the Mets last season, going 13-4 with a 3.03 ERA, including 155 strikeouts in 154 1/3 innings.