ESPN's Marc Stein said on Twitter that Williams' signing is most likely to secure the power forward's NBA Development League rights for the Texas Legends, similar to the Rashad McCants' signing. Williams' last stint in the D-League didn't go too swimmingly.
Williams, a talented defender and rebounder, is a free agent primarily because, as Draft Express once put it, he "generally didn't do a great deal to show that he is 'worth the hassle' considering his off-court issues" in their most recent scouting report while evaluating Williams during a short stint in the D-League with the now-defunct Colorado 14ers.
Only 24, Williams' "off-court issues" are quite lengthy and include a couple of club fiascos, throwing a computer monitor while on a road trip in Denver, being banned from the campus of Boston College and not being able to graduate from said college because he was kicked off the basketball team due to a violation of team rules.
It'd be great to see him get himself back on track, but that's a rather lengthy rap sheet for barely being 24 years old and he's already shown that he's not a fan of the D-League.