Here's what Barcelona boss Josep "Pep" Guardiola said about the injury:
He will be out for a long time: I don't know how long but it takes a long time to return after a break like this. All the players are very worried about David. We hope he will return as soon as possible. Our thoughts are with him and we will have to win the Club World Cup without him.
Villa has been a constant source of transfer rumors with the January window approaching. He would have been one of the most coveted players on the market had Barcelona decided to put him up for a potential move.
The injury occurred after a long ball was sent over the top of Al-Sadd's defense. Villa attempted to bring it down on a first touch, but was unable to control the pass. During the foot race, which continued until well inside the opponent's 18-yard box, Villa came up lame and fell to the ground.
While he didn't appear to be in immense pain as he called for help from the sidelines, he made several gestures as if he immediately knew something bad had just happened. An Al-Sadd player also limped away from the area after the contact.
Villa has scored 11 goals in 20 games across all competitions for La Blaugrana this season, including five in 15 La Liga matches.