Jack McCallum, Wrong About D'Antoni? Pssh
But isn't the identity of McCallum's source plainly obvious? Everyone's read Seven Seconds or Less (McCallum's seminal work on the D'Antoni Suns). Everyone remembers how D'Antoni was portrayed. The level of access afforded to McCallum by the coaching staff and management (at the time, led by Bryan Colangelo) was unmatched. The Suns made McCallum an assistant coach for the preseason, for goodness sake! D'Antoni liked McCallum, McCallum liked D'Antoni. If you've read the book, you understand that.
McCallum publishes a story about the old regime (D'Antoni) wanting out of Phoenix because of disputes with the new regime (Kerr) hours after the Suns are eliminated. You don't need to be Woodward and Bernstein to figure out D'Antoni (or someone very close to him, like say his assistant coach brother) is the guy in McCallum's ear. Kerr can deny all he wants, but I would drop dead of shock* if McCallum somehow screwed this one up.
* I can't actually promise I will drop dead. That might be messy. Sorry.