The clash at San Siro is being billed as a rematch of last year's Champions League Final at the Santiago Bernabeu when Inter won 2-0 thanks to a brace of goals from Diego Milito.
"I saw the game in Madrid," Leonardo said. "I supported Inter. I supported the Italian team.
"I felt satisfaction on seeing Inter win.
"Inter and Bayern are teams who have the resources to face any given moment and face each other as equals.
"It's obvious that the players who are in the best condition will go out on the pitch.
"This team are the holders. We can fight with anyone.
"We'll fight with all our strength. This team has the ability to face real difficulties and this makes me feel strong. It's a moment completely different to last year's Final and every game has its own story."