The Holland midfielder saw a move to Valencia fall through last summer after Hamburg rejected a 22million euro bid even though the player stated his desire to move to Spain.
"What happens when Chelsea or another top club comes along on August 21 and offers 30 million euros? I would want to move, even at the very last minute of the transfer window," he told Sport Bild magazine.
Copyright (c) PA Sport 2008, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: http://gms.to/writeforgms