Benitez said: “This game is really important. We cannot afford to lose because if we do it will be really difficult to qualify. So we need to win.
“A draw? Then a lot would depend on the other results in our group. It’s clear we need three points but the players don’t need me to tell them how important this is.
“The real problem was against Marseille and in a short competition like the group stages it means we have to win again.
“But it’s just two games. We made a big mistake in one, that’s all, and we know we must win to put things right.Porto, who are the best team in Portugal, made it very difficult for us in the first 15 minutes. But to get out of that one with a draw with 10 men was really good.”