Ricky returning to Dolphins?

Last week, coach Saban reportedly spoke with Ricky Williams. The possibility exists that Williams may return to the Dolphins next season, after serving a suspension for drug use. Having Williams would be a bonus if he can play like he did before his "retirement", but I'm wary of how committed he really is to playing football again. Either way, the Dolphins should approach the draft, free agency, and the upcoming season as if Williams will not be a Dolphin. Even if he wanted to return, it's questionable how long he would stay given his flaky disposition.