Leonardo insists that Inter's cycle of dominance in Serie A isn't over and that they are still a force.
Inter look set to relinquish the Scudetto for the first time since 2006.
Milan have an eight-point lead at the top of Serie A with four games of the season remaining.
"I don't believe Inter's cycle is over, but then again what does that mean?" Leonardo asked.
"Does it mean that we have to change 25 players on the squad? I don't believe that we'll change 15 or 25 players…
"Milan's cycle seemed like it was over and instead they'll now win the Scudetto with many of the players from four years ago.
"Inter are second in the table and still in the running for the Coppa Italia after having won the Club World Cup and the treble last season.
"The results of the past don't just disappear."
Asked about his own future, Leonardo said: "For me nothing has ever changed my thinking. I feel a lot like a Coach and I am stronger with respect to before.
"Negative things can strengthen or weaken you. They have strengthened me."