Napoli can compete with Manchester City, despite their spending power, says coach Walter Mazzarri.

On an economical level there is no contest between the two sides, but the former Sampdoria man is remaining optimistic.

"Clubs are companies these days and City are at the spending levels of Barcelona, Real Madrid and Chelsea.

"On a sporting level, if you do things correctly, then anything can happen. On the pitch we are here to compete and cause sides of this level problems.