"Woah, a werewolf staying in his territory. I'm shocked." Dean just had to be the sarcastic bastard he was at that. Derek had walked into it.

He shrugged a shoulder. "Stiles might get hurt. Training is always dangerous. I can't promise he'll be unharmed." Dean had more than a few scars from his training days. He was just making sure other people knew before they ended up pissed off that Dean got Stiles hurt.