Boufal is the best dribbler I've seen in Lille, he is a much better dribbler that Hazard or Payet. He's just a ****ing magician. He has a good vision, good passing skills and a he is excellent at finishing. He adapted very quickly to the team. It's good for him to have a French coach in PL because he appears to be quite introverted off the field.
His big problem is he was wounded several times in a season and a half. In Lille we don't know if it's bad luck or a real physical problem. Also, he is sometimes a little selfish but it's pretty rare.