Pep knows Bayern well, is familiar with their football culture. I think that one of the teams that will go to the final can be the winner of this match.
Very tough game this is, fit to be a final in any season, but unfortunately we have to experience it in the QF this season, the two clubs have quite a lot of expectation on their shoulders, with the quality they have, they are expected to go all the way in the CL, but only one can progress to the SF.
Having said that, Pep knows Bayern, but quite a lot have changed since he left the team some years ago, new manager, many new players, and of course new style of play, thus i don't think because he was a former manager he would know what to expect. City play the first leg at home, so they must use their home advantage to get the win, because it is always difficult in the Allianz Arena.