They don't need one if Courtois turns up with his best pair of gloves and the Real Madrid forward just continue scoring like they have always done. Alkeast Chelsea, Manchester City and PSG can attest to that.
Benzema does not need to be good the whole 90 minutes. In fact, most people are focusing on Benzema, but the Major threat is Rodygo.
Haven't had several outstanding moments with Benzema in the Champions League, its hard not to imagine or see Benzema for a treat. Definitely, there would be a lot of focus on Benzema and Klopp would have some defenders stationed on him to prevent him firm having any free chance with the ball. That would be or mean some huge advantage for Vinicius Junior if only he could put himself in the game and directs his balls to the goal.
Both teams are sure to come very prepared and its going to be an interesting and phenomenal game full of actions for sure.