![Chelsea head coach Maurizio Sarri gestures during the Europa League quarterfinal, second leg, soccer match between Chelsea and Slavia Prague at Stamford Bridge stadium in London, Thursday, April 18, 2019. (AP Photo/Matt Dunham)](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/VOBWSI7WTHZ5UTRMBWNVEAZJMM.jpg?smart=true&auth=e8be421feba168cad2768620cd3e1677719742464b5d89daebcd73e1649f5084&width=400&height=225)
Maurizio Sarri was not completely satisfied despite Chelsea reaching the Europa League quarter-finals. AP Photo
Maurizio Sarri was not completely satisfied despite Chelsea reaching the Europa League quarter-finals. AP Photo
Maurizio Sarri concerned by Chelsea's 'problem' despite reaching Europa League semi-finals
Premier League side given a fright against Czech opponents before winning 5-3 on aggregate
Press Association
19 April, 2019