To me, I think that this is exactly the point - but not in the way you are referring to. The problem is, as the press has been going into overdrive telling us for the last few days, Pep is not going to come here and tweak a couple of minor things to turn the team into world beaters, he's going to come in to rip up and start again. The players should be playing for their positions right now but with the announcement that he's definitely coming, too many of them know that there is no way they are going to be retained and they are most probably highly demoralised. Yaya for one clearly plans on leaving regardless of what happens, but frankly half of the squad probably has at the back of their heads that they are never going to please Pep and therefore they are for the chop. I've been in positions at work myself where it was obvious that a decision to get rid of my team was imminent and trust me, it doesn't inspire you to work harder.
Call me a traditionalist (young though I may be) but I just don't believe in looking for your next manager until after the previous one has cleared his office and driven out of the car park. The uncertainty destroys the team, every time. I think Ferran and Txiki have to take the blame for this - and I don't like saying this as I truly believe he's one of the greatest things that has happened to the club - but after the manner of both Hughes' and Mancini's departures I think Khaldoon has to shoulder some responsibility too. All the noises after Mancini's appointment were that they'd learned their lessons and that they wouldn't pull the rug from under the team's feet by hiring and firing while the previous manager was still in situ, but it's still happening. I know you have to move early to get Pep and perhaps it was a prerequisite of signing him that this happened, but still, it's effectively written off the season.