It seems insane to me.
There's a ton of questions.
Is he a slam-dunk to make the roster? Can he play defense at all? How much will his already poor range be diminished by a bum knee? If he DH's how is Springers knee? Does Springer hurt you less in the outfield than Bichette does in the infield? If Springer plays the field how much does it hurt his bat?
Maybe he's just a bench player? Who knows?