Having previously made public abusive comments sent to him, Willian wants more playes to share their own experiences.
David Luiz is a confirmed absentee, but Arsenal could also be without two fledglings and a midfield general for the clash with Liverpool.
Arsenal came from a goal down to beat Leicester City with a performance that gave Mikel Arteta hope for the future in the biggest games.
Willian has had an underwhelming impact at Arsenal since his off-season move but Mikel Arteta hopes a midweek assist may boost confidence
Arsenal trailed Benfica 2-1 when Willian came on, but they went on to win the Europa League tie 3-2 on the day and 4-3 on aggregate.
Mikel Arteta responded to criticism of recent additions Willian and Martin Odegaard by former defender Tony Adams.
Arsenal legend Tony Adams says his former club needed "strong defenders" rather than the likes of Martin Odegaard.
Arsenal boss Mikel Arteta is waiting to hear more on the progress on potential signings during the January transfer window.
Gabriel has featured prominently for Arsenal this season but is facing a spell out after contracting COVID-19.
Reports of a training ground bust-up between David Luiz and Dani Ceballos have been played down by Arsenal manager Mikel Arteta.