Jose Reyes, who can be a free agent after the season, is enjoying a career year, and his future with the club is uncertain. Should he end up on a different club this season or next, Seaver said, the club needs to have a plan in place.
"If you're trading a franchise player -- and when I was traded they didn't have that kind of thinking -- then you are in a regroup mode, let's just say," Seaver said Saturday at Citi Field. "I'm not saying a rebuilding mode, but a regroup mode. The people that they have now are too smart not to have a plan for regrouping. And a time plan and a people plan. Where are there weaknesses? What are they shooting for?"
Seaver, who described himself as a "voracious reader of box scores," likened the impact of Reyes to that of Johnny Bench and Joe Morgan on the 1970s Reds.
"He's a spectacular player in so many ways," Seaver said. "He's a spectacularly beautiful player, and he's a player that a pitcher defends against, too. With this ballclub, that's probably the most important out of the inning, is him because he can do so many things."
Reyes has said multiple times that he is not worried about his future, and Seaver approved of that approach.
"If he's doing it correctly," Seaver said, "he's getting that totally off of his mind."
Seaver was on hand to lend support to the actress Glenn Close, who sang the national anthem for the 17th time at a Mets home game. Close has a bipolar sister and appeared to promote her charity, Bring Change 2 Mind, which Close says she hopes will help remove the stigma associated with mental disorders.