I am encouraged by his statement. Although players from other countries might say they know about the premier league and what it is like, most if not all do not know until they play in it. A very few will start like a house on fire, but they are the great players. The Shite had one until he bit one player too many. Others adapt and eventually catch up, others fall by the wayside. I really hope Klassen will catch on, if not this season, then next. Koeman knows what the Dutch league consists of. It has happened this way because of other crucial failings in recruitment, and Klassen is consequently in at the deep end up to his neck and struggling; maybe 6 months too early for him.