Perez has been enjoying an impressive season with Sauber, having finished on the podium three times, including second place in the Italian Grand Prix last weekend, when he beat both Ferrari drivers Fernando Alonso and Felipe Massa.
The Sauber driver, in his second season in Formula 1, has been linked with Massa's seat for months, prompting di Montezemolo to play down talk of the Mexican landing a 2013 Ferrari seat back in June.
Although Perez has continued to impress this season, di Montezemolo said on Wednesday that 2013 would still be too soon for the Mexican to move into Ferrari.
"Next season is too early," Di Montezemolo told Sky Sports News. "I'm very pleased for him [after Perez finished second at Monza] because first of all it shows that our choice when we have picked up him as a young driver was good.
"Then it is thanks to Sauber and thanks to the Ferrari Academy that he grows up.
"To put a young guy to Ferrari with the pressure of Ferrari, you need more experience."
Di Montezemolo also said he would welcome world champion Sebastian Vettel at Ferrari in the future should the German leave Red Bull Racing.
"I think that Vettel is more or less in the condition like when Michael was in Benetton," he added.
"He's younger, he's a very good driver and he's making a very good experience so in theory, if you have to ask me a name, I could tell you his name."