I'm sure Lebron gave Kyrie a try when they played in the all-star game. As I'm sure Lebron gave ANY star that came within talking distance his best shot. Lebron is getting desperate in LA. That team really is totally hollow and he's stuck there. When Magic Johnson offered the entire team for Anthony Davis and couldn't get the deal done. When George snubbed him to stay in OKC they must have realized that some players simply don't want to play with him. I'm sure Magic saw it too.
All Kyrie needs to do is look back at the tapes of his time in Cleveland and watch LeCarpetbagger continually bringing the ball up court, and I'm sure the memory will be painful enough to convince him that playing in LA would be a repeat performance.
Why anyone would have a desire to play for the Knicks...even if they are located in NYC I have no idea. That franchise has a bonehead owner that doesn't even care about the team. If that franchise were located in any other city in the Country it would be a depreciating asset.
All roads lead to Boston, he wanted his own team...he got it. He would, in fact, look like a total idiot to desert the Celtics at the slightest bump in the road. He would be viewed as an NBA joke.
IMO He'll sniff around a bit, then commit to remaining in Boston.