Sarri admits Juventus must fix their defence if they're any chance against Lyon. Sarri: "The match [against Lyon] is tough. They have one goal on us, we must come back in a summer match, and it will be hard to play at a top level. That's why it will be tough. We must shoot our last energies there. I was suprised they are very fit. Even in the extra-time [against PSG] they were brilliant. It is impressive. Our problem [to concede many goals] appeared after the lockdown. This is a problem we need to solve because we cannot concede any more goals. It might compromise the whole match."