Moreno was pleased to see Liverpool fend off interest from Barca, and thinks the No.10 will give Klopp's squad a huge injection of quality on his return to the side.
Meanwhile, Liverpool will be disappointed to go behind so early against Sevilla.
Liverpool's midfield also remains unchanged, but there are three changes in the rearguard. It was a missed opportunity and, with a trip to Spartak Moscow in two weeks' time, Liverpool need to make amends quickly.
Wednesday night's Champions League has begun with a bang, with goals scored in the opening few minutes in all three games English clubs are involved in. Rather, it is likely to depend on how well they do in keeping them out of the net at the other end.
The frailties that exist in Jurgen Klopp's team when they do not have the ball are persistent and will be magnified in Europe's premier club competition.
They are so exciting going forward, with Mo Salah, Firmino and Sadio Mane offering pace and goal, that they will give any opponents' defence a testing time.
But more shoddy finishing let them down, and as Sevilla came back into the match, Anfield grew more nervous. Moreno gets forward well, but defensively, he is a liability.
'If we don't give them a game then every year we have to find a number two, 33 years old, who still can catch a few balls and doesn't want to play any more - that's really hard, to find someone like that.
Coutinho was eventually sent on for the final 15 minutes but he could not find a moment of magic he has so often provided.
The Reds will return to domestic action with a home clash against Burnley at Anfield on Saturday.
"He was in the team meeting - he wasn't allowed to breathe! - but after the meeting we sent him home".