Barcelona are all set to face Chelsea in the second leg of UEFA Champions League last-16 tie on Wednesday.

Barca have set the standard in recent years for the most glittering style of football but Ernesto Valverde has instilled a new style this season, built on resilience, organisation and hard graft.

With Lionel Messi and Luis Suarez left to their own devices up front, Barcelona's midfield has become more conscientious and its back-line harder to breach.

Chelsea, however, enjoyed success at Stamford Bridge with a dogmatic approach, when only Messi's equaliser spoilt what was otherwise a controlled Blues performance. Willian's opener means Conte's side take a 1-1 draw to the Camp Nou.

With Philippe Coutinho ineligible, Paulinho is likely to start against Chelsea, and the midfielder will bring athleticism and energy in place of Coutinho's creative spark.

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Barcelona may be happy to play Chelsea at their own game, sustained by their crucial away goal and confident that, given the chance, Messi and Suarez can land the knock-out blow.

Captain Andres Iniesta will be key and the Spaniard appears to have won his battle to be fit after recovering from a hamstring strain. He was included in Valverde's squad on Tuesday.

Conte conceded Chelsea would have to play the "perfect game" to reach the quarter-finals and they will need Eden Hazard to deliver too.

Hazard has grown frustrated in recent weeks with his lone role up front but when asked to compare the 27-year-old Belgian with Iniesta -- who will soon be 34 -- Conte seemed to lay down a challenge.

We're talking about two different players with different careers," Conte said. "Iniesta won a lot in his career, Hazard has to start winning important trophies."

Barca are still unbeaten in La Liga and Messi will be well-rested, having sat out Saturday's win over Malaga to attend the birth of his third child.