Juan Mata and  Chelsea manager Rafa Benitez at yesterday’s pre-match press conference in London.  Photo: Chris Lee/Getty Images

Juan Mata has warned Chelsea of the dangers of Basel and complacency as the Blues bid to reach a European final for a second successive season.(...)

FC Basel’s goalkeeper Yann Sommer fails to save a goal by Chelsea’s Victor Moses (far right) during their Europa League semi-final first leg soccer match at St. Jakob Park Stadium.  Photograph: Denis Balibouse/Reuters

FC Basel 1 Chelsea 2: Rafael Benitez’s side prevailed on t(...)