Mets Rumor Roundup for Wednesday, Dec. 5: Here's what Marlins want from Mets in J.T. Realmuto tradePlus updates on Syndergaard, the Harper market, and more12/5/2018, 3:00 PMSep 18, 2018; Miami, FL, USA; Miami Marlins catcher J.T. Realmuto (11) singles in a run in the fifth inning against the Washington Nationals at Marlins Park. Mandatory Credit: Jasen Vinlove-USA TODAY Sports / Jasen Vinlove