This is exactly what's most likely to happen. As mentioned previously, it would also increase the likelihood of Lauri being traded to a contender next season.
I hope Ainge isn't dumb enough to think he can have his cake and eat it too. Markkanen has been a model citizen so far, but if it's looking like another tanking season is in the cards, his agent will remind him of some cold, hard facts. Not that he needs reminding - a 26 year old All Star who's never been to the playoffs knows the clock is ticking on his career.
I see the draft being meh for the Jazz - some nice rookies but nobody who will make any kind of a real difference next season. Good vet FA's (there won't be many) will take one look at our roster and decide they'd rather play somewhere else. Particularly when there's no guarantee of Lauri staying.
The bottom line is, it won't be easy to improve this team in the short term. That's why another tank is coming.