Strong winds caused part of a roof to collapse at Dutch top-flight team AZ Alkmaar's ground on Saturday, a regional emergency services coordinator said in a tweet.
AZ was not playing at the time and nobody was injured.
Photos circulating on social media show that a section of the roof on one side of the AFAS Stadium fell on to seating below.
AZ plays its second Eredivisie match of the season at RKC Waalwijk Sunday.
Van de Beek, 22, has confirmed Madrid are in talks with Ajax as they look to bolster their midfield before the transfer window closes.
De Jong played alongside Van de Beek last season as the Dutch club won...