It's a little worrying for me with Pepe. He hasn't come in at the best time to help him settle so that is a tough environment.
Having not seem him in the French league and just looking at what I've seen so far he doesn't look like a potential top tier player right now. He looks a bit limited at the moment in what he offers.
It is still early but he will need to start showing some more soon or it'll be very difficult for him to make it longer term.