I think it's still too early to predict anything about Barcelona. , they have to improve a lot of their shortcomings to be able to perform even better.
Barcelona fans and their hierarchy have to be very patient with Xavi, they cannot win the CL this season, and i don't think it is going to happen anytime soon, last season Xavi managed to win the LaLiga, but theyy were eliminated from the CL in the group stage. There is progress this season, because they have won 3 out of 3 in their group and they are almost certain to qualify, but how far can they go? I don't think it is possible for Barcelona to go past the QF stage of the CL this season, they were used to being contenders of the CL every season, but not anymore and their fans have to live with it.