Real Sociedad have confirmed that Carlos Vela suffered a torn meniscus during Saturday's 4-1 defeat at Real Madrid in the league.

The Mexican started as the lone forward at the Bernabeu, but lasted just 17 minutes after picking up a knee injury.

Via an official statement, Sociedad have revealed the extent of the damage, but refused to put a timescale on the striker's recovery.

Various reports have suggested that Vela will be on the sidelines for at least two months.

The news will come as a big blow to David Moyes, who has been frustrated in his attempts to sign a new striker in the transfer window.

Vela has netted seven times for the Basque outfit this season.