Juve need victory to stay in touch with leaders Inter Milan.
"The risks of dropping the intensity levels and dropping points after Champions League games is visible in the statistics, you can't argue when it happens two or three times," said Sarri in his press conference.
“We've got to find out why it keeps happening and fix it. There are differences playing in Serie A to the Champions League, but it's not true to say the European opponents are more open. Bayer Leverkusen focus mainly on possession, while Lokomotiv Moscow tend to clam up.
“Perhaps subconsciously our minds can drift to other targets after so many Scudetto titles in a row, but that is something we must absolutely fight against. If we are to be competitive in the Champions League, we need to be competitive in Italy too.
“It is a good sign that there are three Italian teams in the Round of 16 draw on Monday, but my mind won't be on that until after tomorrow's game."