Inter fell to their sixth defeat in the last eight rounds, losing 3-1 at the Stadio San Paolo.
"Napoli deserve second place and certainly deserved the victory tonight. Edinson Cavani was fantastic, but Inter played open football until we went 3-1 down and had a little bad luck. It's a shame, as we had several chances and couldn't add to our tally.
"The penalty? I wasn't angry about the decision, but rather that Juan Zuniga wasn't booked."