Former Man Utd goalkeeper Edwin van der Sar tells Reds fans it won't be the end of the world if David De Gea leaves for Real Madrid this summer. Edwin Van der Sar believes his Manchester United successor David De Gea will be successfully replaced if the Spaniard leaves for Real Madrid. When the Dutch number one retired four years ago Sir Alex Ferguson made the shock choice of bringing in Atletico Madrid’s 20-year-old unproven keeper as a replacement.