Gelsenkirchen - FC Schalke 04 winger Jefferson Farfan is a doubt for the club's Matchday 8 fixture at home to FC Augsburg.

The Peruvian flier was replaced in the 44th minute of Schalke's 1-0 UEFA Champions League victory over FC Basel 1893 with a groin injury, leaving his participation on Saturday hanging in the balance.

Farfan has featured in six of Schalke's seven Bundesliga games so far this season, scoring once and recording two assists.