I found that article to be very informative. On the positive side, these statements caught my attention:
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On the negative side, I'm just going to summarize things. He's considered average athletically. He's not athletic enough to be projected as a centerfielder, so the Sox are moving him to to right field. Yet, in right, his arm would not be considered an asset nor a hindrance.
All in all, he seems to be a pretty good prospect. They talk about 5 tool player, but they never consider the 6th tool, which in my opinion is the most important. That being the brain, or baseball savvy. See D'Angelo Jiminez for and example of a guy who has tools but lacks that one very crucial element. In a nutshell, that is why I am so optimistic about Aaron Miles.