Liverpool manager Jurgen Klopp has compared his side's ability to score goals in quick succession to Sir Alex Ferguson's Manchester United teams.

The Reds scored three goals in 19 minutes to give themselves a 5-1 aggregate win over Manchester City in the Champions quarter-finals.

And Klopp will try to implement the same quick-fire tactic Ferguson's sides became notorious for when they take on Roma tonight in the semi-finals.

"Is there something with Alex Ferguson, Man United," said Klopp. "At a specific time, they scored always twice?

"Score, score? That is the opportunity. Score once, do it again. Use the momentum in the game. Of course we talk about it, of course we want to use that, but you still have to score.

"The team is a really enthusiastic team. In a good moment, they jump and that's really good to see.

"On the other hand, that's why the two Man City games were really special. We dealt with the very difficult circumstances in the two halves here and there on a high level.

"That brought us to the semis, not that we can score one, two, three in a row.

"In the moments when we are not in charge of the game, we are still in the game, that's a very important thing and that helped us massively."