New coach Alberto Zaccheroni has steadied the ship though and the Bianconeri are starting to grind out results again.
"The game against Ajax was a delicate and difficult one," Trezeguet said.
"However, Juventus are finding themselves again. We are happy with qualification to the next round after an excellent game.
"A lot of the players who were injured are now fit again," he added. "We are determined to do well although we now that we will have to suffer because there is much work to do."