“I think it’s going to be very difficult anyway,” the No.4 said.

“I think the game we played over there, we won 5-0, it was obviously a bit of a strange one. Nobody really expected that result, but obviously we deserved to go through in that round.

“It’s going to be tough again and they obviously don’t want the same as what happened last year. They’re in the quarter-finals of the Champions League and that’s not for no reason. They deserve to be where they are right now so it’s going to be unbelievably tough to beat them.

“Last year, it [the European campaign] went quick for me personally. It was my debut in the Champions League for Liverpool and to reach the final in that same year obviously was special for me and, I think, for the whole club. But I think we obviously learned from what happened over there, we have to take it with us.

“This year has been up and down in the Champions League, in our campaign, but now obviously it’s a knockout and you have to do it over two games.”

On his display against Bayern Munich in the previous round, he added: “It was the best performance in the Champions League, I think, because it had so many things in it.

“It was mature, we obviously played very well in possession and defended very well. I think there were so many things that went well that evening, and we have to build on that.”

On Porto, he added: “We approach the tie to win both games.

“To play at home, obviously we have to create a base to take with us to Porto because it’s going to be tough there.

“I think any team that plays over there finds it hard to play against them, so we have to create a base, try to keep a clean sheet and hopefully score some goals. Hopefully we can finish the job over there.

“That’s obviously the most important thing – to find a solution or an option or something to get the win at all costs.

“Obviously no-one wants to concede, I don’t want to concede goals, but sometimes it happens and at this point we’ve found a way every time and hopefully we can keep that going. But let’s not concede and win games a little bit more easy!”