Juventus coach Max Allegri says they must be careful with Moise Kean after victory over Empoli.

Kean came off the bench to prove the matchwinner for the 1-0 triumph.

Allegri said, “It's only right to have ambition when you are training with Juventus and surrounded by these champions. The difference at this level is mentality and he needs to above all be professional over time, be ready to work hard and improve every day.

“He's got the characteristics and the quality to be a great player, but so did many lads who lost their way over the years."