I don't like the idea of DeSclafani being handed a starting gig, so I'm presuming that's not automatic.
But to be fair, he had a couple year spike in terms of velocity a few seasons back, but last year it was in line with most seasons, so it doesn't look like he's washed up. Or at least, if he's washed up now, he always was. Looks like his slider is still a good pitch. With his recent injury history, maybe DeSclafani is the one who auditions for a bullpen spot, not Varland.
I'll be really disappointed if the Twins don't still address the top of the rotation.