Napoli coach Roberto Donadoni says there's too much negative thinking around the club.

"We must remain concentrated on Siena. There is no point thinking of the mistakes we have made up until now, or it becomes truly difficult to get out of this situation," said Donadoni.

"We just need to worry about kick-starting our campaign this weekend. If I did nothing but repeat the problems we've got, then I would sound like a broken record."

President Aurelio De Laurentiis was furious after a 3-1 defeat at Inter, in which they were already 2-0 down by the fifth minute.

"Napoli are an excellent squad and I want to see 11 leaders on that pitch," continued Donadoni.

"We paid the price for five terrible minutes against Inter, but other than that they certainly did not dominate us.

"The lads need to give their all, as Siena are a strong side who play good football."