From Matt's Official Blog:
I find Koscheck calling me out kind of interesting and I actually don’t know why he is doing that. I was used to kids doing this when I was the champ, but as you know I don’t have the belt now and I’m puzzled as to why Koscheck wants to fight me and not the champion in the weight class. I have no interest in fighting Koscheck and, as he was showing everybody, he’s just a kid. As of yet, the UFC has never come to me and asked me to fight him.
Well, I'm sure Koscheck would like to fight George St. Pierre again, but it's not going to happen in his next fight so why ask for it? Maybe he just doesn't like you, and wants to smash you?