Roma coach Eusebio Di Francesco warned his team against focusing too much on Liverpool star Mohamed Salah in the Champions League semi-final second leg.
Salah inspired Liverpool to a 5-2 win in the opening leg at Anfield, scoring twice and setting up two others against his former club.
"I can't modify a squad for just one player who made the difference in the first leg. And neither can I just have the entire team look at Salah," he said on Tuesday.
"We have to work much better on our mechanism. I heard a lot of people talk about a three-man defence and not a five-man defence. It's like when we play 4-3-3 and when it's convenient, we play 4-5-1.
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"All I can say, the application and focus on such a player who has an impressive quality going forward is pivotal. We need to be better at reading such situations.
"I can't mark Salah with three players."
A pair of late goals at Anfield gave Roma hope heading into Wednesday's clash at the Stadio Olimpico, where they staged a remarkable comeback to beat Barcelona in the quarter-finals.
