This is a difficult time for Barcelona, both for the players and the manager. Gavi is an important player of the team, and his presence is well recognised and appreciated. His injury appears to be severe, and he could be out for the rest of the season. These are difficult times for both Barcelona and Real Madrid, as Real Madrid is also dealing with injuries as a result of the international break. Plan B must be implemented by these two teams in order to reclaim the competition. This is also an excellent opportunity for challenging teams to maintain their position in the league and compete for a higher position by using the lack of their prominent players as an advantage for themselves.
Barcelona often experiences difficult things like this, and what's worse is that last season, Barcelona had to sell some of its assets to get money to be able to pay salaries to its players who had very high salaries. I'm sure Barcelona will still survive and try to attack when there is the right time, because the reduction in Barcelona's core players has reduced their playing performance.