Paulo Fonseca's side are top on seven points after a powerful display from a second string line that started without Edin Dzeko, Pedro and Chris Smalling which did for a Cluj side shocked by coach Dan Petrescu's decision that the match would be his last in charge.
Henrikh Mkhitaryan gave the Serie A side the lead just 57 seconds after kick off, and Ibanez, a brace from Borja Mayoral -- his first goals since signing on loan from Real Madrid -- and another strike from Pedro sealed the points.
