The midfielder picked up the problem during Spain's World Cup qualifying victory over Georgia on Tuesday.
The 28-year-old could now be out of action for up to two weeks because of damage to the adductor muscle in his right leg.
Barca take on Getafe in La Liga on Sunday before hosting Spartak Moscow three days later.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Atletico MadridAtletico | 19 | 13 | 5 | 1 | 34 | 12 | 22 | 44 |
| 2 | Real Madrid | 19 | 13 | 4 | 2 | 43 | 19 | 24 | 43 |
| 3 | Barcelona | 19 | 12 | 2 | 5 | 51 | 22 | 29 | 38 |
| 4 | Athletic Bilbao | 19 | 10 | 6 | 3 | 29 | 17 | 12 | 36 |
| 5 | Villarreal | 19 | 8 | 6 | 5 | 34 | 31 | 3 | 30 |
| 6 | Mallorca | 19 | 9 | 3 | 7 | 19 | 21 | -2 | 30 |
| 7 | Real Sociedad | 19 | 8 | 4 | 7 | 17 | 13 | 4 | 28 |
| 8 | GironaGirona | 19 | 8 | 4 | 7 | 27 | 25 | 2 | 28 |
| 9 | Rayo Vallecano | 19 | 6 | 7 | 6 | 22 | 22 | 0 | 25 |
| 10 | Real BetisBetis | 19 | 6 | 7 | 6 | 21 | 23 | -2 | 25 |
| 11 | Osasuna | 19 | 6 | 7 | 6 | 23 | 28 | -5 | 25 |
| 12 | Celta Vigo | 19 | 7 | 3 | 9 | 28 | 30 | -2 | 24 |
| 13 | Sevilla | 19 | 6 | 5 | 8 | 21 | 28 | -7 | 23 |
| 14 | Las PalmasLas Palmas | 19 | 6 | 4 | 9 | 24 | 29 | -5 | 22 |
| 15 | Getafe | 19 | 4 | 7 | 8 | 13 | 16 | -3 | 19 |
| 16 | Leganes | 19 | 4 | 7 | 8 | 18 | 29 | -11 | 19 |
| 17 | AlavesAlaves | 19 | 4 | 5 | 10 | 21 | 31 | -10 | 17 |
| 18 | Espanyol | 19 | 4 | 4 | 11 | 17 | 31 | -14 | 16 |
| 19 | Real ValladolidValladolid | 19 | 4 | 3 | 12 | 13 | 37 | -24 | 15 |
| 20 | Valencia | 19 | 2 | 7 | 10 | 18 | 29 | -11 | 13 |
| > La Liga Full Table | |||||||||
