Trezeguet is convinced the quality of Serie A is rising.
He stated: "Higuain is proving his value, he is putting in place himself physically and that's very important. Juve have made a very interesting choice of this player, at the highest level.
"For strikers it is critical to want to be leaders, in Italy the level is growing continuously.
"The big bombers are returning in a difficult league, the most difficult in the world."