"We're not out yet," he insisted to Sky Sport Italia. "I trust the team - the players, the Coach and the mentality.
"However, Tuesday went badly on two fronts - we went a man down and then Cordoba's injury left us in a difficult situation.
"With Samuel out as well, we have all our first-choice defenders out. However, the defenders we still have are on the level.
"It's obviously worrying and upsetting that they are out, but it's down to the replacements to prove themselves.
"Did Zlatan Ibrahimovic disappoint me? He was one against four all game, which wasn't exactly easy.
"The game in Milan will be one for everyone to give everything they have and for the lads to believe."