Well, first of all we are in a complicated situation, this year we have very institutional problems and now we need a new structure. Cesc in this 3 years has played in a position who is not the best for him and I think he is tired of the situation. And also we have a poor fans, so much old people go to Camp Nou and are very very severe with the players and specially with Cesc (I never understand why).
But all of this is speculation, I really don't understand why we send him. :) I'm sure that he will doing an excellent job in BPL with Chelsea.
PD: Sorry for my english :P