Italia have secured the Serie A title after a 1-1 draw with Lazio.
Juventus, who had to beat Fiorentina on penalties in the second leg, were reduced to 10 men after Mario Mandzukic’s injury.
Magni was sent off after only five minutes, while Stefano Pioli was then sent off for a second yellow card for the Italians.
Marco Calabria’s side were awarded a free-kick, but Leonardo Bonucci headed the ball into the path of Mandzukić, who slid it past Mandzukać.
The Bianconeri, who are without a win in 11 games, were down to 10 players when Mandzakuic was sent-off.