Did the CIA have advance knowledge of ISIS offensive in Iraq?

This writer in the Lebanese daily Al-Jumhuriyyah claims that the CIA had advance knowledge (through satellite pictures) of the offensive of ISIS in Iraq but that it had suppress the evidence.  I would not take seriously the claim (which is not sourced) if it was not for the fact that the paper is right-wing and pro-US and the owner, Ilyas Murr, is a tool of Jeffrey Feltman (having served as a tool for Syrian intelligence for years).