The quick way to solve this is just to go to Kyrie and ask him. If he wants to be traded, trade him now and keep it moving. Ainge has enough assets and young talent to move on.
I would try to get Beal
I would try to get Poetl and Murray from the Spurs
I would try to get Holiday and Randle
If Kyrie really wants to go back and play with Bron he is a fool.
LA isn't his only option, you know that right? New York can trade for AD and he can just go there as an FA and play with his buddy. I think ultimately, Kyrie wants to play for a fanbase that appreciates him, for whatever reason Boston fans seem to hate him.
I'm seeing that this is becoming a narrative in your posts, I assume in frustration with the Kyrie trolls that many of us have found to be quite annoying. But that statement is far from accurate. I go to most home games and Kyrie gets cheers at loud as IT got during player intros and no one else has been comparable to those 2 in my 3 years. Not Horford, Tatum, or Hayward, aside from when they showed him in a hospital bed.
There is a small swath of delusional fans here who don't like him. But as a larger group, "Boston fans" actually tend to shout 'MVP!' when he shoots free throws.