Juve have stumbled in recent weeks, but Trez says: "It is a very important moment in our season.
"We are good enough to prove to everybody that we are on the same level as Inter and Milan. We want to win the Scudetto and the Champions League and now we will get the chance to prove our worth.
"Ferrara is calm. When my teammates return after the international games he will try and clear any doubts.
"We need to avoid the errors we made against Palermo."