Mauer is as half way as you can get......
and Rooker, Weil and Raley are the plan (all in the minors) if Kepler, Austin, Sano, Garver can't do it.......maybe Astudillo if he's still around. Or Gimenez can play 1B, I'm sure.
I can't see the Twins thinking Garver is in their plans for 1B, he has started 3 games there in two years and that was 2017.
I am not saying he shouldn't, I am saying I don't think the Twins plan is for that.