Hilario, who has been first choice during their FA Cup run, is struggling with a groin strain. Petr Cech is on standby.
Cup specialist: Hilario has been ever-present in the FA Cup this season
Right-back Branislav Ivanovic will have a late fitness test on his injured knee.
Michael Essien (knee), Ashley Cole (ankle), Ricardo Carvalho (ankle) and Jose Bosingwa (knee) are all sidelined
Provisional squad: Cech, Hilario, Turnbull, Kalou, Alex, Drogba, Malouda, Terry, Borini, Lampard, Mikel, Deco, Anelka, Zhirkov, J Cole, Belletti, Ballack, Kakuta, Sturridge, Ferreira, Bruma, Ivanovic.
CLICK HERE FOR THE WEEKEND FA CUP AND BARCLAYS PREMIER LEAGUE TEAM NEWS