Chelsea boss Thomas Tuchel is not worried about his team's defensive record.
The Blues have been notoriously difficult to break down under the German coach's guidance since the middle of last season.
However, Chelsea have conceded goals in their last five matches, which was unheard of in the earlier parts of the Tuchel reign.
Asked what it meant to have no clean sheet in five games, Tuchel said:"It shows us we were spoilt.
"It shows hard it is, teaches us this lesson. Maybe we over-expect clean sheets from us. In the last three games, we've conceded eight goals and this is more concerning than having a clean sheet because to have clean sheets in the competitions we play, you need luck, an extraordinary goalkeeper, a certain momentum.
"This is what we had at the beginning of the season to escape sometimes. One goal conceded is always possible, even if you do everything right. But three, three and two is a bit too much if we are honest.
"We are on it. It makes you appreciate, it makes you understand how hard we worked before and what it takes to be so consistent in not conceding and we want to get back on track it is clear.
"Maybe it shows us how much details matter. How much individual top level in every situation matters and hopefully we get this consistency in not conceding back into our game because it is crucial if you want to win consecutive football matches on this level."
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