The Amsterdam giants are eager to strengthen their attack and had previously set their sights on Luciano Narsingh, but failed to agree terms with Heerenveen and the winger eventually joined PSV instead, prompting Ajax to turn their attention to the Morocco international.
The tricky attacker's contract at Abe Lenstra Stadion is due to expire in June 2013, and the Frisians are keen to cash in on the 23-year-old winger this summer.
