Fischer has impressed for Ajax this season scoring 10 goals as the Amsterdam side retained the Eredivisie title.
Speaking to Voetbal International Fischer, who’s contract expires in 2017, said:
“I have a lot to learn in Amsterdam. I think I’m a wise guy. Only when you’re 25 do you show how good you really are.
“I have accomplished nothing here. It would be arrogant if I thought I was done here.”