The Serb also regretted conceding the goal from a corner. "The fact that we went down a goal from a set piece isn't good. We need to improve that. We need to be there with the attitude that 'my man won't score'. Our level needs to be higher. Like every year, the most important thing is that we're the champions at the end of the year. That's our task."
Ajax won the away match at Vitesse on Sunday by a narrow margin. After a 1-0 deficit, Davy Klaassen and Edson Álvarez reversed the scoreline for a 1-2 victory.