I dunno guys, I recognize that there isn't a lot of present power there, but the guy has elite wheels. I don't see why he couldn't at least become a Gregor Blanco/Brett Gardner/Scott Podsednik type. With his speed in the field and on the basepaths that's all he'd really need to be. And that OBP is hard to argue with as well.
There's a whole category of players with no power who play regularly in CF because they can get on base and run, and those are his best tools. Bout all he needs to do I'd say to be a productive big leaguer somewhere, is get it over the third baseman's head with regularity and learn how to be a good dink-and-dunk singles hitter. His raw speed is a match for Ellsbury's according to what I've read and seen out of him, or nearly so. Easy 40-50SB speed in a good year at any rate. He has the right build to be a fairly one-dimensional but solid leadoff CF type. If we didn't already have an at least slightly better one with some proven MLB experience more people than I would be talking about this guy in that role.
This guy will see big league playing time. A player with his ability to put up a good at bat and his baserunning speed, plus the D, that's an attractive package to put on the bench -- at least. He's young for his level so I don't worry TOO much about tools, he should pick up at least some gap power as he matures physically, and the other stuff, the more advanced fine-tuning stuff like working the count, pitch recognition, bat control, stuff that Josh Reddick might not ever develop, Lin already has that in spades. He's just waiting to fill out his frame with a little extra muscle and learn to square the ball up a little more -- a kid who can put up a .380 OBP with no power in the high minors can't be missing the ole sweet spot by THAT much.
Frankly I'm actually excited about the kid, if not as a Boston player, then as a trade piece to a National League or AL West team. He's got a bit further to go, but it's all in the physical maturity department, not so much actual ball skills. And he's already ready to play as a LIDR and pinch runner even if he takes no further steps forward -- which at his age, level of development, and level of skills refinement I consider highly unlikely.