Former Inter Milan president Massimo Moratti is happy to see Hernanes proving his value.
Hernanes struck twice in victory over Lazio last weekend.
"We knew he was a great player long before the two goals on Sunday against Lazio," said Moratti.
"At the moment he is simply proving his worth and Mancini also deserves credit for instilling confidence into his players.
"There are also many other players he has got the best from. Mancini is really good at his job and is the right person to entrust with the rebirth of Inter."