"The game in Seville was Betis' first ever Champions League game, and believe me, they are a much better team than that," he said.
"We caught them cold with two early goals, but they have experience now. I think they will be different and they showed against Chelsea what they can do.
"A draw and we are through and Betis know they must win. For me Betis are more dangerous away than at home.
"I think they will look to play on the counter attack. They are a very good team on the break and a very fast team.
"We are a similar team to Chelsea so we have to respect Betis. The whole team is working well, it is not just the defence and the goalkeeper.
"All the team is doing well and that is why we are keeping clean sheets. We are improving and must work at this level to win the next games and we will do it for the next game as well.
"We are working hard, playing compact, we have many chances in the games and it is important to keep clean sheets.
"Victory is more important than clean sheets for me. I would rather win all the games in the rest of the season 3-2 than keep clean sheets. Clean sheets look good for me personally.
"We have more clean sheets now than in the whole of last season. That shows we are improving.
"I haven't been too busy. Adapting hasn't been a big problem for me. It is a physical game but for a goalkeeper football is football. You have to make saves."