Arkansas fan here. Anderson is a class act and our fans really liked him as a person. You'll never have to worry about him getting you in hot water with the NCAA.
He definitely improved us from the mess we were in with Pelphrey before he got here. We had just went 2-14 in the SEC a few years prior and were in APR hell. After 8 years though he had never gotten past the first weekend of the tournament, things had gotten a little stagnant and it was probably best for both sides to move on with our attendance declining and us having a new AD. Teams like A&M, Auburn and LSU going further in the tournament probably didn't help either when they don't have the tradition, facilities and fan support that we feel we have (even though LSU and Auburn might not have exactly been playing by the rules). Fans were also frustrated about him missing out on some blue chip in-state players in recruiting like Malik Monk, Archie Goodwin and KeVaughn Allen who all left for other SEC schools.
He had us consistently average to above average/pretty good but we were never great or truly terrible like Vanderbilt was this past season. Some feel his style may be a little outdated but it is really fun to watch when it is working. Not sure how he'll fit in NYC but maybe he can find a few guys like Kareem Reid. Overall I'm not sure why he wasn't able to replicate his success at UAB and Missouri here but there are definitely worse coaches out there. He did get some bad luck draws with some loaded North Carolina teams in the tournament a few times and honestly came close to knocking them off a few years ago if not for a controversial call late in the game.