Grizzlies guard Tony Allen spent six seasons with the Boston Celtics before landing in Memphis prior to the 2010-11 season. In those six years in Boston, Allen was never reported to have shaved a C's logo in the back of his head.
This week, however, Fox Sports Memphis radio host Chris Vernon posted a photo on Twitter of a Grizzlies logo in the back of Allen's head, which can be seen below.
Allen later shaved it after he "talked with some 'advisers.'"