It is yet another seemingly impossible task for Barcelona, but they'll have to come back against Juventus if they are to keep their Champions League hopes alive.
Doing so will be a tall order, and if the Blaugrana do concede once they'll have to put five past the Serie A champions, something which hasn't happened since the 1992/93 season.
On May 30th 1993 was the last time the Italian club conceded five in one match, to Pescara in a 5-1 defeat, with Massimiliano Allegri, curiously enough, netting against his current employers.
Having said that, Luis Enrique still believes that scoring five times is his side's best chance at progressing.
In fact the only time Juventus have lost by a significant margin was back in 1958 when Wienner SC inflicted a 7-0 victory after already winning the first leg 3-1.
Massimiliano Allegri's defence then has a historical component to it, meaning Barcelona's work is indeed cut out for them if they are to make history once again with the unlikeliest of comebacks.
