Barcelona fan favourite could be out for over a month if he undergoes surgery – reportBarcelona’s Gavi faces potential knee surgery for persistent discomfort, jeopardizing his availability for several crucial matches. Conservative treatments failed, raising concerns within the club. Arthroscopic surgery, if required, could sideline the midfielder for over a month, potentially until mid-October, impacting La Liga and Champions League fixtures. Further tests will determine the next course of action.