Kevin Kuranyi is ruled out of Schalke's clash with Chelsea in the UEFA Champions League at Veltins-Arena on Tuesday. The Germany striker has a thigh injury, which saw him taken off Schalke's 1-0 Bundesliga win over Energie Cottbus on Friday. Schalke manager Mirko Slomka confirmed the absence of the 24-year-old forward, who is the club's top scorer in the Bundesliga with four goals. Schalke are bottom of Group B with three points from three games, and the Chelsea encounter will be crucial to their hopes of reaching the next round.