His initial return gave the Mets’ lineup a jolt, but he struggled for most of the second half, finishing with a .237/.307/.403 slash line with 11 homers and 47 RBIs.
Backup Luis Torrens will move into the starter’s role in Alvarez’s absence.
The catching depth in camp includes Chris Williams, Hayden Senger and Jakson Reetz.
“These guys can handle a pitching staff, they can receive so we feel good,” Mendoza said. “[Torrens] will get a good opportunity now.”
Alvarez will join pitchers Sean Manaea and Frankie Montas on the injured list to begin the season.