Ajax midfielder Donny van de Beek won't rule out leaving this summer.
The Holland international is being linked with Manchester United and Tottenham.
"My situation is I have a contract with Ajax and I am really happy," he said.
"You never know what is going to happen in the future but I can say nothing about that."
He added: "Players go to another country, another competition, that's normal in Holland, in the Dutch league, you see that a lot of times."