The 52-year-old saw his side bring their five-game winless streak to an end with a 2-1 victory over Viktoria Plzen in the Champions League on Tuesday but his position remains in jeopardy ahead of the trip to Camp Nou.
When asked whether he would remain in his job come Sunday, he replied: “It is not for me to answer.
“What I know is that we are thinking about and preparing for Sunday’s game.
“It is very important and we will go there with ambition.”
But the home crowd groaned as Plzen pulled a goal back in the 78th minute through Patrik Hrosovsky to set up a nervous finish for the competition holders.
“We didn’t close the game out by scoring more goals, but we had several chances,” said the former Spain coach.
“We wanted to win and play well and, at times, we deserved more.
“It was a tough match and we had a hard time scoring, but we have to accept it.