During his first stint with the Cleveland Cavaliers, Mo Williams wore No. 2. Kyrie Irving now wearing that number, however,and Williams will have to wear a different jersey number. If his Instagram is to be believed, Williams will be wearing No. 52 next season.
Since the caption doesn't show up, here is the caption: 'Just imagine the 5 under the towel #52'. (h/t to douis & kyrie_swirving)
No. 52 Williams jerseys first popped up in the Cavs team shop a few weeks back, but at the time, it wasn't clear if that was Williams' official jersey number. His post seems to mean he'll actually be wearing that number.
Last year with the Timberwolves and Hornets, Williams wore No. 25 and No. 7. No. 25 is of course retired due for Mark Price but No. 7 remains open. It is worth nothing that Williams does not have a number listed on the Cavs' roster.