Who did Diederik Boer replace to be behind a Dutch professional footballer?
Diederik Boer Diederik Boer (born 24 September 1980 in Emmeloord, Netherlands) is a Dutch football player who plays as a goalkeeper. He currently plays for PEC Zwolle in the Eredivisie. Boer made his professional debut on 8 March 2003, when FC Zwolle lost to Ajax 5–0. On 31 August 2014 Boer signed a three-year contract with Ajax to replace the departed Kenneth Vermeer as second keeper behind Jasper Cillessen.
Denny Landzaat Denny Domingues Landzaat (] , born 6 May 1976 in Amsterdam) is a Dutch former footballer who mostly played as a defensive midfielder.