Clay looks between the two. Truth is Clay didn't mean to block the door, he was just trying to get home. And this is a human and humans can't learn about werewolves. Looking at the alien he decides that still even if the human knows about this creature it's best to keep their secret. It's the Number One rule of the Pack.

So he steps aside, "What is this Milliways, and how did I end up here instead of my apartment?" still at the ready in case the big one decides to start a fight.