The Dodgers slugger was also still nursing a fractured finger from August.
Zack Minasian will join his brother Perry as the general manager of an MLB team. Zack will be named the GM of the San Francisco Giants, according to reports.
Costas, 72, made the decision to retire before the 2024 season began.
Soler is in the middle of a three-year, $42 million contract he signed in February.