"We already turned down a 9m offer from Napoli last year," director of sport Gianluca Petrachi told Radio Kiss Kiss.
"He is a great player and deserves to be on the European stage. I'm sure Ogbonna will be a key figure for the Azzurri at Euro 2012.
"I can officially announce we have not received any proposals for him from Napoli this summer.
"Torino will not be dismantled and there will be no drastic changes, but if anything opportune adjustments to a side that earned promotion this season."