FC Schalke 04 winger Jefferson Farfán has been sidelined for around four weeks and will almost certainly miss his side's UEFA Champions League Group E encounter with Chelsea FC on 22 October.
The 28-year-old succumbed to a groin injury during half-time of the Royal Blues' 1-0 victory at FC Basel 1893 on Tuesday. The result – secured courtesy of Julian Draxler's second half-strike – consolidated Schalke's place at the group summit after they dispatched FC Steaua Bucureşti 3-0 on matchday one.
Farfán, who has made 148 league appearances for Schalke since joining from PSV Eindhoven in 2008, could also miss the Ruhr derby with Borussia Dortmund on 26 October.
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