Carmelo a 'conundrum' for ex-coach

Former Denver Nuggets coach George Karl is harshly critical of New York Knicks star Carmelo Anthony in an unsparing new memoir in which he calls 11-time All-Star a "user of people."

Anthony spent his first seven NBA seasons with the Nuggets, playing six-and-a-half of those campaigns - from 2005 until early 2011 - under Karl.

"Carmelo was a true conundrum for me in the six years I had him," Karl writes, according to multiple New York media outlets that obtained an advance look at his book, entitled Furious George.