My understanding, after talking to MLB insiders during early November, is that to trade Noah Syndergaard, the Mets need to get back a comparable, elite position player that can help them win now.
For instance, a Rockies source indicated that they may soon begin listening to offers for Nolan Arenado if they believe he can't be signed to a contract extension. He also confirmed their interest in Syndergaard. So, though he didn't say it, it's easy to see a direct line between swapping these two guys, giving the Mets the best third baseman in baseball for one season, while Colorado can justify moving him by getting a dominant, Cy Young caliber star under contract for three more years.
That said, while it's fun to imagine this type of blockbuster, I'm not yet convinced Mets GM Brodie Van Wagenen actually wants to trade Thor, which I explain in more detail at the end of this post. However, if he is prepared to make a deal right now, I see the following two teams as the best fit...