Derksen has a crystal-clear opinion on the incident involving Kees Smit

Johan Derksen was left unimpressed on Groeten uit Grolloo by Kees Smit's behaviour. The AZ playmaker was taken off against Fortuna Sittard and made no attempt to hide his frustration.

Leeroy Echteld took issue with Smit's reaction after hauling him off in the 69th minute for fellow midfielder Jordy Clasie.

"Look, he is angry and he doesn't look at me. He is allowed to be angry, but I don't like this. He can still look at me when he gets substituted. He can come to me tomorrow," the AZ coach told ESPN.

On Monday, Derksen opened his analysis of the AZ midfielder with a blunt verdict. "I was shocked by the behaviour of Kees Smit," he said. "He is a very young super talent from AZ. There had already been talk of him going to the World Cup and all that, to gain experience. Because he is the new super star."

Saturday's substitution against Fortuna Sittard only sharpened his point. "But he was substituted on Saturday because he played badly. And then you get an act in front of that dugout," De Snor says. "He ignores the coach, and he walks past him with a face like a comic strip worm. The ego was clearly bruised. Then I think: Kees Smit, you are not yet the star they see in you."

He then doubled down with another warning for Smit. "And for the time being you especially should not go to a big foreign club. Because there you have much more competition. And then there will be times when you are left out. If you can't live with that, you'd do well to stay at AZ. In a protected environment."