According to an article by Kaplan in The Athletic (some day I'm going to get that wrong and refer to it as "The Atlantic"), spring training for minor leaguers starts on March 3 (pitchers and catchers) and March 7 (everyone else). Per usual, there is a mini-camp that starts sooner for several dozen of the minors guys. That begins on Feb. 21. Those invited:
Pitchers: Adcock, Bailey, Donato, Garza, Ivey, Javier, Paredes, Scheetz, Solomon.
Catchers: Manea, Papierski, Salazar
Infielders: Arauz, Duarte, Matijevic, Pena, Sierra, Valdez
Outfielders: Beer, Benedetti, Goetzman, Julks, Wrenn
Scott Manea came in the JD Davis trade.
Granden Goetzman was signed last July but barely played after being released by the Cardinals. I suspect they're trying to convert the long-time OF into a pitcher.