I won't be expecting a huge improvement from Barcelona defense against Bayern Munich. The players wouldn't be very motivated to do so either if Inter finish off Plzen earlier in the day. If you've checked already, Inter - Plzen match is going to be played and end before Barcelona's match starts. In case Inter win that match the dream is over for Barcelona. This will surely come back hard to them in terms of finances as well.
This is all Barcelona's fault in the end as they couldn't stay solid from the beginning. I was pretty sure about them to qualify for next round before the group matches started. I was even thinking about whether they would manage to be the leader at the end. But they are about to visit the Europa League two times in a row now.
This is a tough one for Barcelona especially at this moment when this win means so much to them and their hopes of qualification to the next round. I am doubtful Barcelona will be able to get this win playing against Bayern Munich. If it was some other team I would be relaxed and say “oh it's a win for Barcelona” but not in this case I think it will take a miracle for Xavi to pull this one through.