Ajax coach Frank de Boer isn't surprised Manchester United are interested in his goalkeeper Jasper Cillessen. The Holland international is being linked with United as a replacement for David de Gea.
"I can imagine that Frans Hoek and Louis van Gaal think: 'Hey, Cillessen is a good option'," said De Boer.
"If United suddenly provides a certain amount, then we have a big problem. Whether I'm there nervous? I'm not so quickly nervous, but there is of course a danger."
Cillessen is tied to Ajax until 2018.