Napoli defender Andrea Dossena believes Champions League opponents Chelsea are one of the strongest clubs in Europe.
The Naples club meet the Southwest Londoners in the Round of 16 and the Italian left-back is expecting a very tough two-legged encounter.
"I played against Chelsea in the quarter-finals for Liverpool. They're the most difficult team after the Spanish sides," Dossena told Uefa.com.
Napoli host Chelsea at Stadio San Paolo on February 21 with the return leg at Stamford Bridge on March 14.
