It doesn't surprise me that there may be some players like Jay Williams who are skeptical about Saban, but somehow, I doubt it is because they think being out of the NFL for ten years is the main reason.
Jay Williams may have summed up his pathetic career with the statement "He can't treat us like kids. There aren't any discipline problems on this team." Then, he had the gaul to suggest that Mike Martz is a coach that he could live with. Well, of course he could live with Martz. Martz will be lax with the team whereas Saban will demand that they take accountability.
There may be a few casualties to begin the Nick Saban era, as some of these players have probably gotten too used to the country club atmostphere of Dave Wannstedt. I believe they may start with Jay Williams.