Wheeler, Matz, DeGrom, Thor, Niese all slated next year. Harvey is a trade chip for them.
ML service: 2.072 so he should be coming up on arb1 next year. So they would be buying 3 years of control. I don't think anyone will argue against it.
The fact is the Cubs need to balance the line up. In other words add more contact types. Thus trading for a cheap TOR with control in Harvey. Then spending on Hayward in FA to replace Soler. It would be a major upgrade in RF. After that move Bryant to CF and LaStella to 3B. Now another option would be Castro to convert to CF But that is sketchy at best. Going by what we know Bryant and LaStella both can man those positions while providing flexibility if needed.
I'm seeing a line up of LaStella, Heyward, Bryant, Rizzo, Schwarber, Castro, Montero, Russell next year. It would be more stacked to the left side but all of the LH hitters are pretty proven vs LH pitching so not a major concern. If anything they could sign a lead off type to cover CF and move Bryant to 3B on those days.
It has been pretty much assumed that the Mets will end up losing Murphey and Cespedes this year and adding Baez and Soler would give them what they need the most going into next year. Payroll flexibility to be able to retain their rotation long term.