Ajax are eager to find a buyer for Mounir El Hamdaoui.
El Hamdaoui is wanted by Fulham and Blackburn Rovers ahead of the January market.
In a bid to get El Hamdaoui off the wage bill, De Boer has hired a British based agent to help find a buyer in England.
Blackburn and Swansea City have already expressed a tentative interest, while Fulham would also return to the table if Ajax were prepared to accept a cut price fee of around £2million.