I think it's discussed in this thread as well as others.
He didn't have a very good first half, but he had a decent second half. Hasn't shown much power at all, is reportedly still out of shape, was a butcher at 3rd, doesn't walk, has bad pitch recognition, and will swing at anything. On the plus side, he still has tremendous power potential and very good bat speed. Overall he had an underwhelming year, but he gets a mulligan for being young for the league and having to acclimate to a whole new place and way of life.
One would hope to see better performance in the upcoming AFL and next season.