I just checked the record books and it appears that we in fact drew against Palace.
Not to sound like tricky, but he doesn't seem to have any particular strengths or qualities that cause tiring defenders any problems. He's not especially quick, or strong, or tall, he doesn't consistently make runs that put a marker on their heels, he doesn't seem to read the game in a way that gives him a head start. I'm sure some of that could come with time as he settles in the team, the league and the country, and I'm not suggesting we don't give him that time. He's just nowhere near the level right now as far as I can see.