Ajax are poised to sign goalkeeper Jasper Cillessen from NEC Nijmegen on a five-year contract.
In an announcement on Saturday, the Dutch champions said that they have reached an agreement with their Eredivisie rivals but did not disclose the transfer fee they would have to pay.
"Ajax and N.E.C. have, in broad terms, reached an agreement for the transfer of Jasper Cillessen," reads the statement on Ajax's official website.
"The deal is tentative and is dependent on several conditions being met, and a medical examination. After this, the keeper would sign a contract in Amsterdam with a length of five seasons, until June 30, 2016."
The 22-year-old developed at NEC's youth academy and after making his debut for the first team in August last year, enjoyed an impressive 2010-11 campaign.
Cillessen is expected to fight with Kenneth Vermeer for regular first team football for Ajax, who have been seeking for a custodian to replace Maarten Stekelenburg, who joined Italian club Roma earlier this summer.