Keith Hernandez is going through free agency once again.

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The SNY star analyst and legendary Mets first baseman’s SNY contract is up following his 20th season calling games for the network, he told The Post’s Mike Puma.

Hernandez, 71, said he would like to continue in his current role alongside former teammate and fellow analyst Ron Darling and play-by-play man Gary Cohen.

“My contract has run out, but I would love to continue in the booth,” Hernandez told The Post in a Q&A released Friday .

“I enjoy what I do.”

Hernandez is a staple of what many consider to be the best television broadcast in ba

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