Robert Lewandowski may not qualify for Saturday game against Las Palmas according to Diario Sport.
The striker suffered discomfort during Poland game against Wales as he played 120 minutes. The doctor had to treat him with ice before overtime.
The 35-year-old will be able to take part in only two pre-Las Palmas training sessions. This will force Xavi to think about whether he wants to take a risk and start him or put him on the bench.
Lewandowski has had a mixed campaign with Barca so far but has been in top form in recent weeks.
He scored twice in both legs against Napoli as the Catalans reached the quarter-finals of the Champions League. He scored and passed the ball to his team-mates twice in Barca last game before the international break a 3-0 away win over Atletico.