"I have a good feeling about this match, just like before the Valencia tie," he told reporters. "What we're doing in this competition is very good. It's most probably going to be our hardest match of the season, but probably the most important one too.
"We may not have much ball possession, but it's up to us to exploit the ball well when we do have it. It's very hard to block a player like Zlatan Ibrahimovic or Lionel Messi. We can't focus on the opposition's players, but rather on our own assets.
"Our tactical approach will not change because of their lineup. Recently, we have defended well, played well on the break and played well when having only some possession."
The second leg of the tie will be played at Camp Nou in Barcelona next week.