Barcelona will still try as much as possible to return to being the best in La Liga. the arrival of new players is a valuable capital to boost the dignity of El Barca to be respected again.
The new players also have to adjust to Barcelona so they can work with the old players at Barcelona. Because the result in Barcelona's first match of the season, it was something that was very surprising where Barcelona was only able to play in a draw with his opponent Rayo Vallecano and it proved that the cooperation of the players in Barcelona was not so optimal.
It still takes time for the Barcelona players to create chemistry between players. The changes made by them will change something new, meaning that there must be adjustments and readings of what kind of game each player is. But I believe Xavi will help them accelerate something they really need in the game to be more effective.