first of all, as far as we know, there are no appealing offers on the table for kyle. So for the time being, it's not like we even have a choice. It's a no brainer risk to keep him, if at most you lose on a few 2nd round picks - thank you very much, you can keep them ...
Now, if one team comes and throw a decent first round pick at us, then it becomes dicier, masai will have to really think long and hard.
Keep in mind, even if lowry decides to leave, we still get something. A S&T may net us a 2nd rounder, at worst we get cap space. So any offer would have to at least top thatin order to have any appeal whatsoever.