Ousmane Dembele's first La Liga start ended on a sour note at Getafe after he forced out with a hamstring pull just after 25 minutes.
Dembélé arrived at Camp Nou from Borussia Dortmund last month for an initial €105m (£97m), plus a potential €42m (£38m) in add-ons, making him the second most expensive player in history behind Neymar.
After a quiet game against Juventus in the Champions League, the young Frenchman who may have hoped for a better showing on Saturday will be disappointed on what was his debut as a LaLiga starter for Barcelona.
Barcelona went on to preserve their 100 percent start to the season as substitute Paulinho struck a late winner to secure a 2-1 victory over the La Liga new boys.
An official report on the extent of his injury is yet to be issued by the La Liga leaders.
