Ousmane Dembele injured his left leg during the second half of Barcelona’s 3-1 win over Leganes in the Spanish league on Sunday.
The 21-year-old France forward slipped while trying to dribble past an opponent, causing him to fall back on his own leg.
After being attended to by team doctors he limped off and was substituted.
Barcelona coach Ernesto Valverde says it seemed his player had “slightly twisted” his ankle, but more tests are planned on Monday.
Dembele scored Barcelona’s opening goal, taking his tally to 13 goals in all competitions this season as he excels as a strike partner to Lionel Messi and Luis Suarez.
