Who Will Turn Werewolf on The Vampire Diaries?

There are clearly vampires in Mystic Falls.
After last week's episode, we also know there have been witches in the town for centuries.
TV Guide, meanwhile, reports that another creature will soon make an appearance on The Vampire Diaries.
On an upcoming episode, a major male character will turn out to be a werewolf. This storyline was not part of the L.J. Smith book series; and the magazine state that the individual in question won't even know he's a werewolf at first.
Interesting. There are only a couple candidates, really: Tyler and Matt. Our money is on the latter. Debate this issue now in our Vampire Diaries forum!
Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.