Borussia Dortmund coach Jurgen Klopp has admitted that Napoli could pose a threat to his side in their Champions League Group F clash at Stadio San Paolo.

Klopp said, however, that Napoli would not be looking forward to facing Dortmund due to his side's 100% start to the Bundesliga season.

"If you measure Napoli's potential, not only their attacking abilities, even though it is built on pace, technique and spirit," Klopp told reporters. "Then, if you look on their defence, they are well experienced and really consistent in what they do.

"It's not something we are scared of but we have looked into these things ahead of the match in order to judge and prepare for them.

"But again, those who have seen us in our past four or five matches would also not be happy and say 'hey, luckily Borussia Dortmund is coming'."

Napoli have also made a 100% start to their season.