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LONDON,ENGLAND - MAY 9: Sebastien Haller of Eintracht Frankfurt and Mateo Kovacic and Davide Zappacosta of Chelsea compete for the ball during the UEFA Europa League Semi Final Second Leg match between Chelsea and Eintracht Frankfurt at Stamford Bridge on May 09, 2019 in London, England. (Photo by Etsuo Hara/Getty Images)

LONDON,ENGLAND - MAY 9: Sebastien Haller of Eintracht Frankfurt and  Mateo Kovacic and Davide Zappacosta of Chelsea compete for the ball during the UEFA Europa League Semi Final Second Leg match between Chelsea and Eintracht Frankfurt at Stamford Bridge on May 09, 2019 in London, England. (Photo by Etsuo Hara/Getty Images)