I think everything all happened in a short time, probably they did not expect things will end up the way they did, they also didn't expect Messi will leave the club so they were not prepared for his departure but things are finally falling into place once again thanks to Xavi, a lot of improvement has been made compared to the previous season and they can now compete for the league trophy.
Barcelona should not have let go of Aubameyang during the last transfer now they will go two three games without Lewandoski, Depay is more from the side than the position Lewandoski plays so I think Barcelona will find it hard scoring against espanyol. Did they not successfully appeal was it not lifted so Lewandoski can play? Depay has been linked with Man United since they lacked a number nine currently, Europa League approaching they will have to get him if they really want the player around. Europa will be back United are surely hoping to seal it for the fans.