The draw leaves Napoli second, with a win against Genk in their final Group E outing enough to guarantee progression and possibly first place, depending on how Liverpool fare at Salzburg.
Although that run was extended to seven games with a 1-1 Champions League draw, De Laurentiis believes there can be no doubting the players' commitment.
"They closed the center so we needed to come from the wing", Klopp said, via the BBC. "It was just from outside, why would we be thinking about Salzburg when we were playing Napoli?".
Liverpool battles Brighton, Everton and Bournemouth in Premier League play before returning to their Champions League group stage finale against Salzburg. "Last year we had to win at home 1-0 against Napoli, I can not remember a bigger pressure game than that".
"The way Napoli set up, it didn't help that they scored, they could follow their plan all the time, we had to increase pressure all the time".
The 60-year-old Italian told Sky Sport Italia: 'We changed the players, but not the basic structure of the team.
"In (the Napoli) dressing room, they feel like they are already through and maybe they are", Liverpool manager Jurgen Klopp said.
He left Anfield with his left foot in a protective boot and Klopp will hope he is not ruled out for any length of time with a packed December fixture schedule coming up. The Brazil midfielder will be assessed over the next 48 hours. It's still early and we all hope it's not too serious but it's pretty painful in an area you don't want to have pain.
"He has pain, which is not good. We take that, it was always a hard one".
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