However, with the seasons in Holland and England to go beyond June due to the coronavirus suspension, Andriessen feels Ziyech needs to stay with Ajax.
“What could be done is a gentlemen's agreement. It is often the same when a player is sold in the summer," the players' union chief said.
"That way you could turn it around once. Not leave a little earlier, but stay a little longer. It is not forbidden to be creative. However, this is only possible if clubs and players agree on this together. FIFA can never impose that bindingly."