Chelsea manager Maurizio Sarri says his team "need a solution" to their poor performances in the second half of matches after Thursday's 4-3 win over Slavia Prague in the UEFA Europa League.
The Italian spoke to reporters after seeing his side endure a nervy finish to secure a place in the semi-finals against Bundesliga side Eintracht Frankfurt.
"[We played] very well in the first half I think. As usual, we started badly in the second half. We need a solution. In the last ten matches, we started like this match.