Following the battle over Tikrit, Tehran reportedly turned to Hezbollah leader Hassan Nasrallah to send in trained fighters to take on the Islamic State in Mosul.
An unnamed source told al-Jadeed that Nasrallah agreed to send 800 men from elite units to participate in the anticipated battle.
The lightly armed fighters will be enter Iraq within the next two weeks. Once there, Iran will equip them with heavy weapons.
The chosen Hezbollah fighters are expected to be stationed in the northern Iraqi city of Samarra and will draft plans for the attack on Mosul.
The Iranians are already running an operations center in Samarra led by Qassem Soleimani, Commander of Iran's Quds Force.
Tehran apparently wants to lead the battle against ISIL and see Hezbollah fighting the Islamists as a means to deter US forces from engaging in ground activity for the liberation of Mosul.