This was reported by the press service of the Iraqi Football Federation.
The 73-year-old Dutch specialist headed Feyenoord last season and planned to retire.
The lawyer worked with the Russian national team from 2010 to 2012.
From 2006 to 2009 he led Zenit, which led to the victory in the UEFA Cup and Super Cup.
Earlier Grishin said that a foreign coach would not just go to Russia.