Wenger is becoming increasingly impressed by the quality of player the Belgian championship is producing.
"Belgium produces players. Maybe they are a championship that we give not enough credit. We say: 'OK, he is doing well but he is in Belgium.'
"But you see when they move out. Look at the number of players they have produced recently: [Mousa] Dembélé, [Eden] Hazard, [Axel] Witsel. We don't speak about the guys that we know here like [Thomas] Vermaelen or now [Jan] Vertonghen. Maybe it's a championship that we have to look a little bit deeper in."