On the other hand, Spain does have the guarantee of one representative in the semi-final of the tournament, and the path of the draw ensures that either Villarreal or Valencia will be paired with the victor of the tie between Arsenal and Napoli in the semi-final.
And the 61-year-old has a point when he argued that no side will want to face the Blues, who are aiming to win the competition they lifted six years ago. "He is improving in the last month", said the ex-Napoli boss.
Sarri will have to be wary of Prague's attacking qualities, but at the same time they should be able to cause huge problems of their own offensively.
"His potential as a player is very, very, high". He had a wonderful match and I'm really happy he could play for 90 minutes. Physically, technically, he is improving tactically.
The Blues can still qualify for next season's Champions League by virtue of winning the Europa League in Maurizio Sarri's first season in charge. "He can become one of the best midfielders not only in England but in Europe".
Football news - Arsenal draw Napoli in quarter-final, Chelsea to face Slavia Prague
Teenager Hudson-Odoi got on the score sheet before the final whistle, using his speed to outrun the Dynamo defence on the counter and easily beat Boyko to make it five goals on the night for Chelsea.
"[The draw against Arsenal is] a hard but very fascinating challenge for us, for the club and for our fans", Ancelotti said. I think that we played a very, very good first half. I thought that game for him was a good one.
The victor of the quarter-final between Napoli and Arsenal will certainly be favourite to make the final, both of which are capable of causing a serious threat to the Blues.
"You know very well my relationship with the city, with the people".
" "[The draw against Arsenal is] a hard but very fascinating challenge for us, for the club and for our fans.