Hernanes has been a hit for Lazio in the Serie A this season.
“As soon as I arrived in Rome, I realised what an extraordinary atmosphere surrounds the derby,” said the Brazilian.
“The derbies are also very passionate in Brazil, but in Rome it must be something crazy. I cannot wait to experience it.
“Right from my first days in the capital, the fans have done nothing but urge me to score in the derby.
“I absolutely must give them that joy. I will score.”