Nicolai Boilesen is leaving Ajax this summer.
The Denmark fullback was the subject of a failed bid from Aston Villa earlier this month.
Boilesen is inside the final year of his current Ajax deal and his father, Kenny, admits he will be allowed to move on.
"We have agreed with Ajax that Nicolai can leave this summer. We are therefore working hard on a solution," Kenny Boilesen told Ajax Showtime.
"There are a lot of negotiations, but nothing is official.
"The interested clubs are still thinking."