Chelsea ace Juan Mata is treading cautiously after learning that Napoli will be their Champions League Round of 16 opponents.

The Spanish winger is well aware of the threat of the Naples outfit who possess such players as Mark Hamsik, Edinson Cavani and Ezequiel Lavezzi but is not looking too far ahead as the Blues prepare for Wigan Athletic in the league this weekend.

"Tough draw in the knockout stage. Napoli is our rival in Champions," Mata wrote on his Twitter and Facebook accounts.

"The first leg in Italy will be very complicated. What do you reckon? I like this team, with fast, handstand and incisive players.

"But first of all, before that, we need to focus in the Premier League, tomorrow we play against Wigan. We will try to keep the winning streak."

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