Mets manager Carlos Mendoza said that Alvarez (hand) will begin a rehab assignment Wednesday at Single-A St. Lucie, Anthony DiComo of MLB.com reports.
The 23-year-old took live batting practice Tuesday, and that was apparently the final hurdle before being cleared for game action. Alvarez has been sidelined for the past month due to a hamate fracture in his left hand for which he underwent surgery, and he'll likely need at least a handful of games in the minors to get up to speed before making his 2025 debut for the Mets.