Congrats on picking up Maidens! This guy was a first round talent 100% before the concussion. He was terrific in Owen Sound as a 16 year old (his OHL winning goal speaks for itself), and he was taking the next step this season when his year was derailed. The concussion was really serious, and as far as I know he still hasn't skated (he spent the second half of the year at home away from the team), but lately the interviews and whatnot out of Owen Sound's paper have been encouraging. The team really missed him with everything he brought to the team and if it weren't for guys like Joseph Blandisi (COL) stepping up and Halmo (NYI) playing out of his mind the team might have missed the playoffs. The power play really suffered without him.
He's the ideal future 2nd/3rd line centre. He's got an offensive element to his game that's sometimes flashy, but he backs it up by being solid at both ends of the ice. He's well built physically and would have otherwise been seen as somebody closer to Zemgus Girgensons in the draft than at 82 overall.
I'd say that his ideal upside would be a flashier version of Mike Fisher, even if he's not as good defensively. Just the solidness in his game and the role he's likely to play at the pro level reminds me a lot of Fisher.
Hopefully his health continues to improve, because should he be healthy and given the proper time (I'd say 3-4 years), he'll be an NHL player.