The offseason is shaping up well for Edwin Díaz, it would seem.

While the Mets signed Devin Williams as a potential replacement for Díaz as the closer in Queens, it’s clear they’d prefer Williams to serve as a setup man, ideally for Díaz, after Williams flamed out as a closer last season with the Yankees.

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And even after that year in The Bronx, during which Williams lost the closer role twice, he still got a lucrative deal from the Mets.

“I wasn’t sure he’d get that much,’’ one agent said of the three-year, $51 million contract Williams agreed to with the crosstown Mets. “I don’t think it’s crazy, but it’s more than I’d have thought.’’