The Iranian struggled at the Valley, but is banging in goals with Heerenveen.
The Dutch side are keen on the Forest striker, who impressed on loan at PEC Zwolle last season.
Heerenveen youngster Daley Sinkgraven admits that he wants to move to Ajax.
Gertjan Verbeek does not believe Daley Sinkgraven is ready to make a Premier League switch just yet.
The manager of sc Heerenveen has asked Manchester United and Liverpool - as well as other suitors - to leave Daley Sinkgraven alone.
We bring you a fact-file on SC Heerenveen's Icelandic striker - linked with Celtic this summer.