Can we even afford all of Horford-Butler-Durant?
I get that we are sending back salary as well to get Butler so that is covered, but Durant+Horford will still cost about 50M in cap space, which eliminates re-signing Turner or keeping Jerebko probably.
If Livingston is proving something to us, it's that for a championship team, Turner off the bench with his ability to create his own shot is valuable. Jerebko's versatility at 5M/Year is also a big plus.
And no draft pick is going to come in and automatically replace Turner for at least the next few years.