Although this may be a little harsh, I think it's close to the truth. May is almost done with his junior year, and really hasn't produced much. I'm not sure where people are thinking he is this uber-talented player that just hasn't found his confidence yet, or is underachieving, etc. There's a difference between being a good athlete and a good basketball player.
You can throw a lob to him from time to time due to his athleticism, but I can't think of much else that May really brings to the table. Yeah, he's had a few nice games in the non-conference against the IPFW's of the world, but year after year, he disappears in Big Ten play once the level of competition gets going. I agree with others that May will see very limited minutes next year.