Looks like he's tripping over his own feet. To be expected though, I think the pace will be more than he's used to and he's had no time to settle in.
Not at all but he's come from a lower standard of football where he's only had a season playing against a Premier side. You can't expect much from him yet.
If it wasn't for his chance where he booted the ball to the back of the stand, I would have forgot he was on the pitch.