"If you put more money into the youth academy and apply a good vision, as is the case with AZ, then there will almost certainly be better players," he said.
"If you continue to develop in the right way, the level of the Eredivisie will eventually rise and it will be more interesting for players to stay longer in the Netherlands."
"He was out of the Eredivisie and many people thought Everton was a logical step. Nevertheless, it does not seem so easy to step up. On the other hand, it was also difficult to stay with Ajax. A possible conclusion: players are currently too quickly developing in the Eredivisie "