Former Liverpool captain Steven Gerrard on BT Sport: "I'm happy for them. You see the emotion on James Milner's face there, he's been immense. You see the celebrations in the crowd and I know what it means. I know the following this club has got.
"These fans just want this club to compete and they want to be proud of their team. This manager has got them flying, if they go one step further this could be the start of something special under this manager. I think they're on the verge of something really, really good."
Ex-Reds defender Mark Lawrenson on BBC Radio 5 live: "No-one says anything about Philippe Coutinho anymore. I actually thought when he left it might unsettle Roberto Firmino with his mate leaving, but actually, he has stepped up to the plate and been brilliant.
"The two young full-backs [Andy Robertson and Trent Alexander-Arnold] have seriously improved. Loris Karius is relatively inexperienced so maybe we shouldn't be too surprised they have conceded the goals tonight. But the experience they have gained from nights like this will be invaluable. Jurgen Klopp has improved all of his players.
"If we said at the start of the game, Roma would win 4-2, we would have got locked up. It was a game that was so open and that's a slight worry. Going forward, Liverpool are unstoppable but they do have mad moments defensively. If they can cure that moving forward they will be an excellent team."
Ex-Manchester United defender Rio Ferdinand on BT Sport: "It's great to see this but as an ex-Manchester United player it's frightening. This could be the start of something.
"Real Madrid will be thinking 'we have to be on it'. History will suggest Real are favorites but they can come unstuck against this team."