I can't see Pep surrendering possession, but he knows Barcelona better than anyone so might not try and play their game.
We seem to be more clinical than them and do more in possession at times, it does seem sometimes that they just pass the ball just for the sake of it. Given our physicality, if we were to face them, we probably won't play the same possession game as we do against other teams. That might make Pep sick to the bone though, lol!