Juventus coach Max Allegri says they must play to win against Sporting CP.
Juve are in Lisbon for the second-leg of the Europa League quarterfinal defending a 1-0 lead.
Allegri said, It is unthinkable to play to defend the 1-0 advantage.
"We have to try to score. There will be times when we have to defend ourselves as a team and do better than the first leg.
"We will need to be patient especially when your opponents dribble in the offensive phase and have mental strength because the stadium will have an impact."