https://www.cbafaq.com/salarycap.htm#Q15
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Maybe you don't get the LT money, I don't know, but you don't have to spend it. Spending that money, for this team, this year does not seem smart right now. If they do, they eliminate the chance of adding future picks via picking up players teams need to unload to save their own LT money. You have to the end of the season to spend it anyway. So picking up players at the deadline could potentially fill both requirements.
Based on everything they've said, the Jazz are absolutely looking to pick up players from heavy spenders at the deadline. With draft picks to make it worth the Jazz's while.