The New York Knicks and Utah Jazz had made "some progress, some traction" on a Donovan Mitchell trade before a contract extension was agreed to with RJ Barrett, which led to a collapse to the talks.
"A wrecking ball hit when the Knicks and Jazz wouldn't come to terms," said Brian Windhorst. "I don't know who said no. I don't know if it was the Knicks who said no, or the Jazz who said no. The Knicks went ahead and signed RJ Barrett to a contract extension on Monday.
"That created an incredible amount of animus between the two organizations. I definitely felt it in talking to people over the last 24 hours. I will tell you that even though I felt that there was some scar tissue there, I was saying 'It is only August 31st, September 1st. That doesn't mean they're not going to do a deal.'"
The Cleveland Cavaliers went on to engage the Jazz on a trade for Mitchell and a deal was reached on Thursday without the Knicks being brought back to the table to improve their offer.