Lazio coach Delio Rossi insists there's no concerns over Mauro Zarate's sudden form lapse.

"Zarate is experiencing the classic Rome moment. He was not a genius before and not a failure now. We have to be balanced when evaluating our start to this campaign," said Rossi.

Meanwhile, Lazio striker Tommaso Rocchi is available for tonight's clash with Chievo.

Rossi added: "We have to run a great deal to maintain our tempo. Rocchi is better and I have taken him with us to Verona, so it is definitely a theory that he could start.

"We will always play the same way, regardless of the tactical system. I don't want to overhaul the squad, that is for sure."