I'm willing to bet Pitino did not say that. Pitino stated publicly on the caravan tour that he wanted Coleman to stay. It seems more likely that Pitino was brutally honest with Joe about what he saw as the strengths and deficiencies in his game, and what he needed to do in order to get playing time in his system. Joe, comfortably entrenched as a starter in Tubby's system, probably didn't like the idea that he might suddenly see his role reduced as an upperclassman unless he was able to make substantial improvements in certain areas of his game. So he transferred to a school where he'll probably slide right in as a starter again.
I have to admit, now that we're sitting here down at least one scholarship player and possibly two for the 2013-14 season, I wish we still had Coleman.