In their game against Barca, they looked knackered for the last 30 mins IMO. This is the ideal game to start Salah Mane and Firmino. Id go as far as Milner Wijnaldum and Fabinho in midfield. These 6 understand how to press and cover the LB and RB in Klopp's system. Have them run Madrid rugged for 65 mins and then bring on Thiago and Jota for the last 25 mins. That is the only way I see us having a way back.