This to me is a curious decision given the fact that he has put together a couple of impressive seasons in the Q. There have been questions about his health and there was the incident with the racial slur, but I can't see these being enough to warrant not signing him.
What's even more perplexing is that the Oilers felt that Blain didn't deserve a contract while players like Kristians Pelss and Cameron Abney did. It's almost as if the familiarity with those 2 prospects got them the nod over Blain. In terms of ability, Blain is a 6'2 offensive defenceman with decent skating and is a right shot. All of the Oilers up and coming offensive defenceman all shoot left. In fact, the Oilers actually have very few right handed defenceman in their system at all, with just Jeff Petry, Corey Potter, Taylor Fedun, Alex Plante and Colten Teubert being the lone righties in the system.
It seems strange that an organization that has an obvious weakness in their system would turn away one of the guys who could potentially help there, especially given some of the guys they've chosen to sign.