Benfica is not going to have Gaitán ready for the game. Offensively Benfica attack is one of the greatest one's I've ever seen (I'm mid 30's). Defensively it has 2 top notch central defenses (Luisão and Garay). They might loose the midfield battle even having the one's like Enzo playing at it's prime.
I expect at least 2 goals on the game. Benfica to score at least one. Juventus to score at most one. 10-13 corners at most (as it is just the first leg, don't expect crazy offensive tactics).
Would be good to hear some feedback from a Juventus fan.