Willian says Chelsea must play the "perfect" game to advance to the Champions League quarter-finals at the expense of Barcelona on Wednesday.
The first leg at Stamford Bridge was drawn 1-1, meaning Barca have a crucial away goal - scored by Lionel Messi, his first in nine appearances against the Blues.
A memorable display in adversity at the Nou Camp saw Chelsea advance ahead of Barca in April 2012 and they went on to win the competition. Willian was asked about that 2-2 draw on Tuesday.
"I was watching that game, but for me every game has history," the Brazilian said.