Willian has confirmed he asked to take the crucial penalty which Ross Barkley failed to convert in Chelsea's Champions League loss to Valencia on Tuesday.
England international Barkley skimmed his attempt off the top of the crossbar in the 87th minute of the Premier League side's 1-0 home loss.
The midfielder had been introduced from the bench seven minutes earlier and only settled over the spot-kick following a debate with starters Willian and Jorginho.
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Blues boss Frank Lampard later revealed Barkley to be the designated penalty taker but experienced winger Willian had hoped to be entrusted with the chance.