Schalke 04 will be without German World Cup winning midfielder Julian Draxler until next year as it was announced on Monday he needs an operation on a torn hamstring.

The 21-year-old suffered the injury in Schalke's 1-0 Bundesliga win over Augsburg last Friday.

Germany's team doctor Hans-Wilhelm Mueller-Wohlfahrt diagnosed the injury and among the matches Draxler will miss are Wednesday's Champions League match against Sporting Lisbon, the Euro 2016 qualifier against Gibraltar next week and a friendly against Spain.

Schalke director of sport Horst Heldt has confirmed he will not play again until after January's winter break.

The Royal Blues are hoping to have Ghana midfielder Kevin-Prince Boateng back from an ankle injury for their Champions League clash in Lisbon which pits second in the group Schalke against the tailenders Sporting.

The 27-year-old attacking midfielder took part in Monday's training session having missed the last two Bundesliga games and may feature in the game.

Schalke will also definitely be without Cameroon defender Joel Matip, who misses the match with a bruised foot.