The Italy U21 international has been linked with United as a replacement for veteran captain Michael Carrick.
But agent Joao Santos confirmed that Jorginho is happy with life in Italy, before taking a dig at the weather conditions in the north of England.
He added: "From June he'll have two more years on his contract and maybe we'll start discussing it then, it's pointless messing with his head.
"The contract isn't expiring any time soon, there's time.
"He's happy in Naples, Jorginho is happy and the city is very beautiful.
"I'm glad to come here [to Naples] too, it's a very Brazilian climate.
"In Manchester it rains too often."